31712680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 74526480

約数和(自身を除く): 42813800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 61, 82, 122, 164, 205, 244, 305, 317, 328, 410, 488, 610, 634, 820, 1220, 1268, 1585, 1640, 2440, 2501, 2536, 3170, 5002, 6340, 10004, 12505, 12680, 12997, 19337, 20008, 25010, 25994, 38674, 50020, 51988, 64985, 77348, 96685, 100040, 103976, 129970, 154696, 193370, 259940, 386740, 519880, 773480, 792817, 1585634, 3171268, 3964085, 6342536, 7928170, 15856340, 31712680]

約数ペア:

[(1, 31712680), (2, 15856340), (4, 7928170), (5, 6342536), (8, 3964085), (10, 3171268), (20, 1585634), (40, 792817), (41, 773480), (61, 519880), (82, 386740), (122, 259940), (164, 193370), (205, 154696), (244, 129970), (305, 103976), (317, 100040), (328, 96685), (410, 77348), (488, 64985), (610, 51988), (634, 50020), (820, 38674), (1220, 25994), (1268, 25010), (1585, 20008), (1640, 19337), (2440, 12997), (2501, 12680), (2536, 12505), (3170, 10004), (5002, 6340)]