261967360

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3301}}^1$

素因数の和:3355

約数の個数: 80

約数和(自身を含む): 648565632

約数和(自身を除く): 386598272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3301, 3968, 4960, 6602, 7936, 9920, 13204, 15872, 16505, 19840, 26408, 33010, 39680, 52816, 66020, 79360, 102331, 105632, 132040, 204662, 211264, 264080, 409324, 422528, 511655, 528160, 818648, 845056, 1023310, 1056320, 1637296, 1690112, 2046620, 2112640, 3274592, 4093240, 4225280, 6549184, 8186480, 8450560, 13098368, 16372960, 26196736, 32745920, 52393472, 65491840, 130983680, 261967360]

約数ペア:

[(1, 261967360), (2, 130983680), (4, 65491840), (5, 52393472), (8, 32745920), (10, 26196736), (16, 16372960), (20, 13098368), (31, 8450560), (32, 8186480), (40, 6549184), (62, 4225280), (64, 4093240), (80, 3274592), (124, 2112640), (128, 2046620), (155, 1690112), (160, 1637296), (248, 1056320), (256, 1023310), (310, 845056), (320, 818648), (496, 528160), (512, 511655), (620, 422528), (640, 409324), (992, 264080), (1240, 211264), (1280, 204662), (1984, 132040), (2480, 105632), (2560, 102331), (3301, 79360), (3968, 66020), (4960, 52816), (6602, 39680), (7936, 33010), (9920, 26408), (13204, 19840), (15872, 16505)]