18402280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:890

約数の個数: 64

約数和(自身を含む): 45682560

約数和(自身を除く): 27280280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 823, 860, 1118, 1646, 1720, 2236, 2795, 3292, 4115, 4472, 5590, 6584, 8230, 10699, 11180, 16460, 21398, 22360, 32920, 35389, 42796, 53495, 70778, 85592, 106990, 141556, 176945, 213980, 283112, 353890, 427960, 460057, 707780, 920114, 1415560, 1840228, 2300285, 3680456, 4600570, 9201140, 18402280]

約数ペア:

[(1, 18402280), (2, 9201140), (4, 4600570), (5, 3680456), (8, 2300285), (10, 1840228), (13, 1415560), (20, 920114), (26, 707780), (40, 460057), (43, 427960), (52, 353890), (65, 283112), (86, 213980), (104, 176945), (130, 141556), (172, 106990), (215, 85592), (260, 70778), (344, 53495), (430, 42796), (520, 35389), (559, 32920), (823, 22360), (860, 21398), (1118, 16460), (1646, 11180), (1720, 10699), (2236, 8230), (2795, 6584), (3292, 5590), (4115, 4472)]