20920984

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 48153600

約数和(自身を除く): 27232616

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 37, 46, 56, 74, 92, 148, 161, 184, 259, 296, 322, 439, 518, 644, 851, 878, 1036, 1288, 1702, 1756, 2072, 3073, 3404, 3512, 5957, 6146, 6808, 10097, 11914, 12292, 16243, 20194, 23828, 24584, 32486, 40388, 47656, 64972, 70679, 80776, 113701, 129944, 141358, 227402, 282716, 373589, 454804, 565432, 747178, 909608, 1494356, 2615123, 2988712, 5230246, 10460492, 20920984]

約数ペア:

[(1, 20920984), (2, 10460492), (4, 5230246), (7, 2988712), (8, 2615123), (14, 1494356), (23, 909608), (28, 747178), (37, 565432), (46, 454804), (56, 373589), (74, 282716), (92, 227402), (148, 141358), (161, 129944), (184, 113701), (259, 80776), (296, 70679), (322, 64972), (439, 47656), (518, 40388), (644, 32486), (851, 24584), (878, 23828), (1036, 20194), (1288, 16243), (1702, 12292), (1756, 11914), (2072, 10097), (3073, 6808), (3404, 6146), (3512, 5957)]