21522250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 22956470

約数列:

[1, 2, 5, 10, 19, 23, 25, 38, 46, 50, 95, 115, 125, 190, 197, 230, 250, 394, 437, 475, 575, 874, 950, 985, 1150, 1970, 2185, 2375, 2875, 3743, 4370, 4531, 4750, 4925, 5750, 7486, 9062, 9850, 10925, 18715, 21850, 22655, 24625, 37430, 45310, 49250, 54625, 86089, 93575, 109250, 113275, 172178, 187150, 226550, 430445, 467875, 566375, 860890, 935750, 1132750, 2152225, 4304450, 10761125, 21522250]

約数ペア:

[(1, 21522250), (2, 10761125), (5, 4304450), (10, 2152225), (19, 1132750), (23, 935750), (25, 860890), (38, 566375), (46, 467875), (50, 430445), (95, 226550), (115, 187150), (125, 172178), (190, 113275), (197, 109250), (230, 93575), (250, 86089), (394, 54625), (437, 49250), (475, 45310), (575, 37430), (874, 24625), (950, 22655), (985, 21850), (1150, 18715), (1970, 10925), (2185, 9850), (2375, 9062), (2875, 7486), (3743, 5750), (4370, 4925), (4531, 4750)]