18244720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:410

約数の個数: 80

約数和(自身を含む): 46684512

約数和(自身を除く): 28439792

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 53, 65, 80, 104, 106, 130, 208, 212, 260, 265, 331, 424, 520, 530, 662, 689, 848, 1040, 1060, 1324, 1378, 1655, 2120, 2648, 2756, 3310, 3445, 4240, 4303, 5296, 5512, 6620, 6890, 8606, 11024, 13240, 13780, 17212, 17543, 21515, 26480, 27560, 34424, 35086, 43030, 55120, 68848, 70172, 86060, 87715, 140344, 172120, 175430, 228059, 280688, 344240, 350860, 456118, 701720, 912236, 1140295, 1403440, 1824472, 2280590, 3648944, 4561180, 9122360, 18244720]

約数ペア:

[(1, 18244720), (2, 9122360), (4, 4561180), (5, 3648944), (8, 2280590), (10, 1824472), (13, 1403440), (16, 1140295), (20, 912236), (26, 701720), (40, 456118), (52, 350860), (53, 344240), (65, 280688), (80, 228059), (104, 175430), (106, 172120), (130, 140344), (208, 87715), (212, 86060), (260, 70172), (265, 68848), (331, 55120), (424, 43030), (520, 35086), (530, 34424), (662, 27560), (689, 26480), (848, 21515), (1040, 17543), (1060, 17212), (1324, 13780), (1378, 13240), (1655, 11024), (2120, 8606), (2648, 6890), (2756, 6620), (3310, 5512), (3445, 5296), (4240, 4303)]