16902440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 40296960

約数和(自身を除く): 23394520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 317, 344, 430, 620, 634, 860, 1240, 1268, 1333, 1585, 1720, 2536, 2666, 3170, 5332, 6340, 6665, 9827, 10664, 12680, 13330, 13631, 19654, 26660, 27262, 39308, 49135, 53320, 54524, 68155, 78616, 98270, 109048, 136310, 196540, 272620, 393080, 422561, 545240, 845122, 1690244, 2112805, 3380488, 4225610, 8451220, 16902440]

約数ペア:

[(1, 16902440), (2, 8451220), (4, 4225610), (5, 3380488), (8, 2112805), (10, 1690244), (20, 845122), (31, 545240), (40, 422561), (43, 393080), (62, 272620), (86, 196540), (124, 136310), (155, 109048), (172, 98270), (215, 78616), (248, 68155), (310, 54524), (317, 53320), (344, 49135), (430, 39308), (620, 27262), (634, 26660), (860, 19654), (1240, 13631), (1268, 13330), (1333, 12680), (1585, 10664), (1720, 9827), (2536, 6665), (2666, 6340), (3170, 5332)]