489147560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{12491}}^1$

素因数の和:12602

約数の個数: 64

約数和(自身を含む): 1214222400

約数和(自身を除く): 725074840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 712, 890, 979, 1780, 1958, 3560, 3916, 4895, 7832, 9790, 12491, 19580, 24982, 39160, 49964, 62455, 99928, 124910, 137401, 249820, 274802, 499640, 549604, 687005, 1099208, 1111699, 1374010, 2223398, 2748020, 4446796, 5496040, 5558495, 8893592, 11116990, 12228689, 22233980, 24457378, 44467960, 48914756, 61143445, 97829512, 122286890, 244573780, 489147560]

約数ペア:

[(1, 489147560), (2, 244573780), (4, 122286890), (5, 97829512), (8, 61143445), (10, 48914756), (11, 44467960), (20, 24457378), (22, 22233980), (40, 12228689), (44, 11116990), (55, 8893592), (88, 5558495), (89, 5496040), (110, 4446796), (178, 2748020), (220, 2223398), (356, 1374010), (440, 1111699), (445, 1099208), (712, 687005), (890, 549604), (979, 499640), (1780, 274802), (1958, 249820), (3560, 137401), (3916, 124910), (4895, 99928), (7832, 62455), (9790, 49964), (12491, 39160), (19580, 24982)]