21635656

素因数分解:

$2^3\times 7^2\times {\mathrm{97}}^1\times {\mathrm{569}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 47760300

約数和(自身を除く): 26124644

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 97, 98, 194, 196, 388, 392, 569, 679, 776, 1138, 1358, 2276, 2716, 3983, 4552, 4753, 5432, 7966, 9506, 15932, 19012, 27881, 31864, 38024, 55193, 55762, 110386, 111524, 220772, 223048, 386351, 441544, 772702, 1545404, 2704457, 3090808, 5408914, 10817828, 21635656]

約数ペア:

[(1, 21635656), (2, 10817828), (4, 5408914), (7, 3090808), (8, 2704457), (14, 1545404), (28, 772702), (49, 441544), (56, 386351), (97, 223048), (98, 220772), (194, 111524), (196, 110386), (388, 55762), (392, 55193), (569, 38024), (679, 31864), (776, 27881), (1138, 19012), (1358, 15932), (2276, 9506), (2716, 7966), (3983, 5432), (4552, 4753)]