428740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1$

素因数の和:136

約数の個数: 48

約数和(自身を含む): 1037232

約数和(自身を除く): 608492

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 97, 130, 170, 194, 221, 260, 340, 388, 442, 485, 884, 970, 1105, 1261, 1649, 1940, 2210, 2522, 3298, 4420, 5044, 6305, 6596, 8245, 12610, 16490, 21437, 25220, 32980, 42874, 85748, 107185, 214370, 428740]

約数ペア:

[(1, 428740), (2, 214370), (4, 107185), (5, 85748), (10, 42874), (13, 32980), (17, 25220), (20, 21437), (26, 16490), (34, 12610), (52, 8245), (65, 6596), (68, 6305), (85, 5044), (97, 4420), (130, 3298), (170, 2522), (194, 2210), (221, 1940), (260, 1649), (340, 1261), (388, 1105), (442, 970), (485, 884)]