81499700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{251}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 188987904

約数和(自身を除く): 107488204

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 191, 251, 340, 382, 425, 502, 764, 850, 955, 1004, 1255, 1700, 1910, 2510, 3247, 3820, 4267, 4775, 5020, 6275, 6494, 8534, 9550, 12550, 12988, 16235, 17068, 19100, 21335, 25100, 32470, 42670, 47941, 64940, 81175, 85340, 95882, 106675, 162350, 191764, 213350, 239705, 324700, 426700, 479410, 814997, 958820, 1198525, 1629994, 2397050, 3259988, 4074985, 4794100, 8149970, 16299940, 20374925, 40749850, 81499700]

約数ペア:

[(1, 81499700), (2, 40749850), (4, 20374925), (5, 16299940), (10, 8149970), (17, 4794100), (20, 4074985), (25, 3259988), (34, 2397050), (50, 1629994), (68, 1198525), (85, 958820), (100, 814997), (170, 479410), (191, 426700), (251, 324700), (340, 239705), (382, 213350), (425, 191764), (502, 162350), (764, 106675), (850, 95882), (955, 85340), (1004, 81175), (1255, 64940), (1700, 47941), (1910, 42670), (2510, 32470), (3247, 25100), (3820, 21335), (4267, 19100), (4775, 17068), (5020, 16235), (6275, 12988), (6494, 12550), (8534, 9550)]