20208280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 48153600

約数和(自身を除く): 27945320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 379, 430, 620, 758, 860, 1240, 1333, 1516, 1720, 1895, 2666, 3032, 3790, 5332, 6665, 7580, 10664, 11749, 13330, 15160, 16297, 23498, 26660, 32594, 46996, 53320, 58745, 65188, 81485, 93992, 117490, 130376, 162970, 234980, 325940, 469960, 505207, 651880, 1010414, 2020828, 2526035, 4041656, 5052070, 10104140, 20208280]

約数ペア:

[(1, 20208280), (2, 10104140), (4, 5052070), (5, 4041656), (8, 2526035), (10, 2020828), (20, 1010414), (31, 651880), (40, 505207), (43, 469960), (62, 325940), (86, 234980), (124, 162970), (155, 130376), (172, 117490), (215, 93992), (248, 81485), (310, 65188), (344, 58745), (379, 53320), (430, 46996), (620, 32594), (758, 26660), (860, 23498), (1240, 16297), (1333, 15160), (1516, 13330), (1720, 11749), (1895, 10664), (2666, 7580), (3032, 6665), (3790, 5332)]