18801320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:714

約数の個数: 64

約数和(自身を含む): 45904320

約数和(自身を除く): 27103000

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 68, 85, 86, 136, 170, 172, 215, 340, 344, 430, 643, 680, 731, 860, 1286, 1462, 1720, 2572, 2924, 3215, 3655, 5144, 5848, 6430, 7310, 10931, 12860, 14620, 21862, 25720, 27649, 29240, 43724, 54655, 55298, 87448, 109310, 110596, 138245, 218620, 221192, 276490, 437240, 470033, 552980, 940066, 1105960, 1880132, 2350165, 3760264, 4700330, 9400660, 18801320]

約数ペア:

[(1, 18801320), (2, 9400660), (4, 4700330), (5, 3760264), (8, 2350165), (10, 1880132), (17, 1105960), (20, 940066), (34, 552980), (40, 470033), (43, 437240), (68, 276490), (85, 221192), (86, 218620), (136, 138245), (170, 110596), (172, 109310), (215, 87448), (340, 55298), (344, 54655), (430, 43724), (643, 29240), (680, 27649), (731, 25720), (860, 21862), (1286, 14620), (1462, 12860), (1720, 10931), (2572, 7310), (2924, 6430), (3215, 5848), (3655, 5144)]