21542220

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 192

約数和(自身を含む): 79027200

約数和(自身を除く): 57484980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 41, 42, 45, 54, 60, 63, 70, 82, 84, 90, 105, 108, 123, 126, 135, 139, 140, 164, 180, 189, 205, 210, 246, 252, 270, 278, 287, 315, 369, 378, 410, 417, 420, 492, 540, 556, 574, 615, 630, 695, 738, 756, 820, 834, 861, 945, 973, 1107, 1148, 1230, 1251, 1260, 1390, 1435, 1476, 1668, 1722, 1845, 1890, 1946, 2085, 2214, 2460, 2502, 2583, 2780, 2870, 2919, 3444, 3690, 3753, 3780, 3892, 4170, 4305, 4428, 4865, 5004, 5166, 5535, 5699, 5740, 5838, 6255, 7380, 7506, 7749, 8340, 8610, 8757, 9730, 10332, 11070, 11398, 11676, 12510, 12915, 14595, 15012, 15498, 17097, 17220, 17514, 18765, 19460, 22140, 22796, 25020, 25830, 26271, 28495, 29190, 30996, 34194, 35028, 37530, 38745, 39893, 43785, 51291, 51660, 52542, 56990, 58380, 68388, 75060, 77490, 79786, 85485, 87570, 102582, 105084, 113980, 119679, 131355, 153873, 154980, 159572, 170970, 175140, 199465, 205164, 239358, 256455, 262710, 307746, 341940, 359037, 398930, 478716, 512910, 525420, 598395, 615492, 718074, 769365, 797860, 1025820, 1077111, 1196790, 1436148, 1538730, 1795185, 2154222, 2393580, 3077460, 3590370, 4308444, 5385555, 7180740, 10771110, 21542220]

約数ペア:

[(1, 21542220), (2, 10771110), (3, 7180740), (4, 5385555), (5, 4308444), (6, 3590370), (7, 3077460), (9, 2393580), (10, 2154222), (12, 1795185), (14, 1538730), (15, 1436148), (18, 1196790), (20, 1077111), (21, 1025820), (27, 797860), (28, 769365), (30, 718074), (35, 615492), (36, 598395), (41, 525420), (42, 512910), (45, 478716), (54, 398930), (60, 359037), (63, 341940), (70, 307746), (82, 262710), (84, 256455), (90, 239358), (105, 205164), (108, 199465), (123, 175140), (126, 170970), (135, 159572), (139, 154980), (140, 153873), (164, 131355), (180, 119679), (189, 113980), (205, 105084), (210, 102582), (246, 87570), (252, 85485), (270, 79786), (278, 77490), (287, 75060), (315, 68388), (369, 58380), (378, 56990), (410, 52542), (417, 51660), (420, 51291), (492, 43785), (540, 39893), (556, 38745), (574, 37530), (615, 35028), (630, 34194), (695, 30996), (738, 29190), (756, 28495), (820, 26271), (834, 25830), (861, 25020), (945, 22796), (973, 22140), (1107, 19460), (1148, 18765), (1230, 17514), (1251, 17220), (1260, 17097), (1390, 15498), (1435, 15012), (1476, 14595), (1668, 12915), (1722, 12510), (1845, 11676), (1890, 11398), (1946, 11070), (2085, 10332), (2214, 9730), (2460, 8757), (2502, 8610), (2583, 8340), (2780, 7749), (2870, 7506), (2919, 7380), (3444, 6255), (3690, 5838), (3753, 5740), (3780, 5699), (3892, 5535), (4170, 5166), (4305, 5004), (4428, 4865)]