1780648380

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{3389}}^1$

素因数の和:3553

約数の個数: 192

約数和(自身を含む): 6378624000

約数和(自身を除く): 4597975620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 139, 140, 180, 189, 210, 252, 270, 278, 315, 378, 417, 420, 540, 556, 630, 695, 756, 834, 945, 973, 1251, 1260, 1390, 1668, 1890, 1946, 2085, 2502, 2780, 2919, 3389, 3753, 3780, 3892, 4170, 4865, 5004, 5838, 6255, 6778, 7506, 8340, 8757, 9730, 10167, 11676, 12510, 13556, 14595, 15012, 16945, 17514, 18765, 19460, 20334, 23723, 25020, 26271, 29190, 30501, 33890, 35028, 37530, 40668, 43785, 47446, 50835, 52542, 58380, 61002, 67780, 71169, 75060, 87570, 91503, 94892, 101670, 105084, 118615, 122004, 131355, 142338, 152505, 175140, 183006, 203340, 213507, 237230, 262710, 284676, 305010, 355845, 366012, 427014, 457515, 471071, 474460, 525420, 610020, 640521, 711690, 854028, 915030, 942142, 1067535, 1281042, 1413213, 1423380, 1830060, 1884284, 2135070, 2355355, 2562084, 2826426, 3202605, 3297497, 4239639, 4270140, 4710710, 5652852, 6405210, 6594994, 7066065, 8479278, 9421420, 9892491, 12718917, 12810420, 13189988, 14132130, 16487485, 16958556, 19784982, 21198195, 25437834, 28264260, 29677473, 32974970, 39569964, 42396390, 49462455, 50875668, 59354946, 63594585, 65949940, 84792780, 89032419, 98924910, 118709892, 127189170, 148387365, 178064838, 197849820, 254378340, 296774730, 356129676, 445162095, 593549460, 890324190, 1780648380]

約数ペア:

[(1, 1780648380), (2, 890324190), (3, 593549460), (4, 445162095), (5, 356129676), (6, 296774730), (7, 254378340), (9, 197849820), (10, 178064838), (12, 148387365), (14, 127189170), (15, 118709892), (18, 98924910), (20, 89032419), (21, 84792780), (27, 65949940), (28, 63594585), (30, 59354946), (35, 50875668), (36, 49462455), (42, 42396390), (45, 39569964), (54, 32974970), (60, 29677473), (63, 28264260), (70, 25437834), (84, 21198195), (90, 19784982), (105, 16958556), (108, 16487485), (126, 14132130), (135, 13189988), (139, 12810420), (140, 12718917), (180, 9892491), (189, 9421420), (210, 8479278), (252, 7066065), (270, 6594994), (278, 6405210), (315, 5652852), (378, 4710710), (417, 4270140), (420, 4239639), (540, 3297497), (556, 3202605), (630, 2826426), (695, 2562084), (756, 2355355), (834, 2135070), (945, 1884284), (973, 1830060), (1251, 1423380), (1260, 1413213), (1390, 1281042), (1668, 1067535), (1890, 942142), (1946, 915030), (2085, 854028), (2502, 711690), (2780, 640521), (2919, 610020), (3389, 525420), (3753, 474460), (3780, 471071), (3892, 457515), (4170, 427014), (4865, 366012), (5004, 355845), (5838, 305010), (6255, 284676), (6778, 262710), (7506, 237230), (8340, 213507), (8757, 203340), (9730, 183006), (10167, 175140), (11676, 152505), (12510, 142338), (13556, 131355), (14595, 122004), (15012, 118615), (16945, 105084), (17514, 101670), (18765, 94892), (19460, 91503), (20334, 87570), (23723, 75060), (25020, 71169), (26271, 67780), (29190, 61002), (30501, 58380), (33890, 52542), (35028, 50835), (37530, 47446), (40668, 43785)]