20741996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 42725760

約数和(自身を除く): 21983764

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 577, 817, 836, 946, 1154, 1634, 1892, 2308, 3268, 6347, 8987, 10963, 12694, 17974, 21926, 24811, 25388, 35948, 43852, 49622, 99244, 120593, 241186, 272921, 471409, 482372, 545842, 942818, 1091684, 1885636, 5185499, 10370998, 20741996]

約数ペア:

[(1, 20741996), (2, 10370998), (4, 5185499), (11, 1885636), (19, 1091684), (22, 942818), (38, 545842), (43, 482372), (44, 471409), (76, 272921), (86, 241186), (172, 120593), (209, 99244), (418, 49622), (473, 43852), (577, 35948), (817, 25388), (836, 24811), (946, 21926), (1154, 17974), (1634, 12694), (1892, 10963), (2308, 8987), (3268, 6347)]