81561630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{241}}^1\times {\mathrm{389}}^1$

素因数の和:669

約数の個数: 64

約数和(自身を含む): 203860800

約数和(自身を除く): 122299170

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 241, 290, 389, 435, 482, 723, 778, 870, 1167, 1205, 1446, 1945, 2334, 2410, 3615, 3890, 5835, 6989, 7230, 11281, 11670, 13978, 20967, 22562, 33843, 34945, 41934, 56405, 67686, 69890, 93749, 104835, 112810, 169215, 187498, 209670, 281247, 338430, 468745, 562494, 937490, 1406235, 2718721, 2812470, 5437442, 8156163, 13593605, 16312326, 27187210, 40780815, 81561630]

約数ペア:

[(1, 81561630), (2, 40780815), (3, 27187210), (5, 16312326), (6, 13593605), (10, 8156163), (15, 5437442), (29, 2812470), (30, 2718721), (58, 1406235), (87, 937490), (145, 562494), (174, 468745), (241, 338430), (290, 281247), (389, 209670), (435, 187498), (482, 169215), (723, 112810), (778, 104835), (870, 93749), (1167, 69890), (1205, 67686), (1446, 56405), (1945, 41934), (2334, 34945), (2410, 33843), (3615, 22562), (3890, 20967), (5835, 13978), (6989, 11670), (7230, 11281)]