18709180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1123}}^1$

素因数の和:1163

約数の個数: 72

約数和(自身を含む): 48435408

約数和(自身を除く): 29726228

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1123, 1190, 1666, 2246, 2380, 3332, 4165, 4492, 5615, 7861, 8330, 11230, 15722, 16660, 19091, 22460, 31444, 38182, 39305, 55027, 76364, 78610, 95455, 110054, 133637, 157220, 190910, 220108, 267274, 275135, 381820, 534548, 550270, 668185, 935459, 1100540, 1336370, 1870918, 2672740, 3741836, 4677295, 9354590, 18709180]

約数ペア:

[(1, 18709180), (2, 9354590), (4, 4677295), (5, 3741836), (7, 2672740), (10, 1870918), (14, 1336370), (17, 1100540), (20, 935459), (28, 668185), (34, 550270), (35, 534548), (49, 381820), (68, 275135), (70, 267274), (85, 220108), (98, 190910), (119, 157220), (140, 133637), (170, 110054), (196, 95455), (238, 78610), (245, 76364), (340, 55027), (476, 39305), (490, 38182), (595, 31444), (833, 22460), (980, 19091), (1123, 16660), (1190, 15722), (1666, 11230), (2246, 8330), (2380, 7861), (3332, 5615), (4165, 4492)]