661295880

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{87473}}^1$

素因数の和:87500

約数の個数: 128

約数和(自身を含む): 2519251200

約数和(自身を除く): 1857955320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 87473, 174946, 262419, 349892, 437365, 524838, 612311, 699784, 787257, 874730, 1049676, 1224622, 1312095, 1574514, 1749460, 1836933, 2099352, 2361771, 2449244, 2624190, 3061555, 3149028, 3498920, 3673866, 3936285, 4723542, 4898488, 5248380, 5510799, 6123110, 6298056, 7347732, 7872570, 9184665, 9447084, 10496760, 11021598, 11808855, 12246220, 14695464, 15745140, 16532397, 18369330, 18894168, 22043196, 23617710, 24492440, 27553995, 31490280, 33064794, 36738660, 44086392, 47235420, 55107990, 66129588, 73477320, 82661985, 94470840, 110215980, 132259176, 165323970, 220431960, 330647940, 661295880]

約数ペア:

[(1, 661295880), (2, 330647940), (3, 220431960), (4, 165323970), (5, 132259176), (6, 110215980), (7, 94470840), (8, 82661985), (9, 73477320), (10, 66129588), (12, 55107990), (14, 47235420), (15, 44086392), (18, 36738660), (20, 33064794), (21, 31490280), (24, 27553995), (27, 24492440), (28, 23617710), (30, 22043196), (35, 18894168), (36, 18369330), (40, 16532397), (42, 15745140), (45, 14695464), (54, 12246220), (56, 11808855), (60, 11021598), (63, 10496760), (70, 9447084), (72, 9184665), (84, 7872570), (90, 7347732), (105, 6298056), (108, 6123110), (120, 5510799), (126, 5248380), (135, 4898488), (140, 4723542), (168, 3936285), (180, 3673866), (189, 3498920), (210, 3149028), (216, 3061555), (252, 2624190), (270, 2449244), (280, 2361771), (315, 2099352), (360, 1836933), (378, 1749460), (420, 1574514), (504, 1312095), (540, 1224622), (630, 1049676), (756, 874730), (840, 787257), (945, 699784), (1080, 612311), (1260, 524838), (1512, 437365), (1890, 349892), (2520, 262419), (3780, 174946), (7560, 87473)]