21329464

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 46347840

約数和(自身を除く): 25018376

約数列:

[1, 2, 4, 8, 13, 23, 26, 37, 46, 52, 74, 92, 104, 148, 184, 241, 296, 299, 481, 482, 598, 851, 962, 964, 1196, 1702, 1924, 1928, 2392, 3133, 3404, 3848, 5543, 6266, 6808, 8917, 11063, 11086, 12532, 17834, 22126, 22172, 25064, 35668, 44252, 44344, 71336, 72059, 88504, 115921, 144118, 205091, 231842, 288236, 410182, 463684, 576472, 820364, 927368, 1640728, 2666183, 5332366, 10664732, 21329464]

約数ペア:

[(1, 21329464), (2, 10664732), (4, 5332366), (8, 2666183), (13, 1640728), (23, 927368), (26, 820364), (37, 576472), (46, 463684), (52, 410182), (74, 288236), (92, 231842), (104, 205091), (148, 144118), (184, 115921), (241, 88504), (296, 72059), (299, 71336), (481, 44344), (482, 44252), (598, 35668), (851, 25064), (962, 22172), (964, 22126), (1196, 17834), (1702, 12532), (1924, 11086), (1928, 11063), (2392, 8917), (3133, 6808), (3404, 6266), (3848, 5543)]