68104280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 158669280

約数和(自身を除く): 90565000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 131, 164, 205, 262, 317, 328, 410, 524, 634, 655, 820, 1048, 1268, 1310, 1585, 1640, 2536, 2620, 3170, 5240, 5371, 6340, 10742, 12680, 12997, 21484, 25994, 26855, 41527, 42968, 51988, 53710, 64985, 83054, 103976, 107420, 129970, 166108, 207635, 214840, 259940, 332216, 415270, 519880, 830540, 1661080, 1702607, 3405214, 6810428, 8513035, 13620856, 17026070, 34052140, 68104280]

約数ペア:

[(1, 68104280), (2, 34052140), (4, 17026070), (5, 13620856), (8, 8513035), (10, 6810428), (20, 3405214), (40, 1702607), (41, 1661080), (82, 830540), (131, 519880), (164, 415270), (205, 332216), (262, 259940), (317, 214840), (328, 207635), (410, 166108), (524, 129970), (634, 107420), (655, 103976), (820, 83054), (1048, 64985), (1268, 53710), (1310, 51988), (1585, 42968), (1640, 41527), (2536, 26855), (2620, 25994), (3170, 21484), (5240, 12997), (5371, 12680), (6340, 10742)]