1225980

素因数分解:

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

素因数の和:168

約数の個数: 108

約数和(自身を含む): 4357080

約数和(自身を除く): 3131100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 139, 140, 147, 180, 196, 210, 245, 252, 278, 294, 315, 417, 420, 441, 490, 556, 588, 630, 695, 735, 834, 882, 973, 980, 1251, 1260, 1390, 1470, 1668, 1764, 1946, 2085, 2205, 2502, 2780, 2919, 2940, 3892, 4170, 4410, 4865, 5004, 5838, 6255, 6811, 8340, 8757, 8820, 9730, 11676, 12510, 13622, 14595, 17514, 19460, 20433, 25020, 27244, 29190, 34055, 35028, 40866, 43785, 58380, 61299, 68110, 81732, 87570, 102165, 122598, 136220, 175140, 204330, 245196, 306495, 408660, 612990, 1225980]

約数ペア:

[(1, 1225980), (2, 612990), (3, 408660), (4, 306495), (5, 245196), (6, 204330), (7, 175140), (9, 136220), (10, 122598), (12, 102165), (14, 87570), (15, 81732), (18, 68110), (20, 61299), (21, 58380), (28, 43785), (30, 40866), (35, 35028), (36, 34055), (42, 29190), (45, 27244), (49, 25020), (60, 20433), (63, 19460), (70, 17514), (84, 14595), (90, 13622), (98, 12510), (105, 11676), (126, 9730), (139, 8820), (140, 8757), (147, 8340), (180, 6811), (196, 6255), (210, 5838), (245, 5004), (252, 4865), (278, 4410), (294, 4170), (315, 3892), (417, 2940), (420, 2919), (441, 2780), (490, 2502), (556, 2205), (588, 2085), (630, 1946), (695, 1764), (735, 1668), (834, 1470), (882, 1390), (973, 1260), (980, 1251)]