21656852

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 23703148

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 149, 179, 203, 298, 358, 406, 596, 716, 812, 1043, 1253, 2086, 2506, 4172, 4321, 5012, 5191, 8642, 10382, 17284, 20764, 26671, 30247, 36337, 53342, 60494, 72674, 106684, 120988, 145348, 186697, 373394, 746788, 773459, 1546918, 3093836, 5414213, 10828426, 21656852]

約数ペア:

[(1, 21656852), (2, 10828426), (4, 5414213), (7, 3093836), (14, 1546918), (28, 773459), (29, 746788), (58, 373394), (116, 186697), (149, 145348), (179, 120988), (203, 106684), (298, 72674), (358, 60494), (406, 53342), (596, 36337), (716, 30247), (812, 26671), (1043, 20764), (1253, 17284), (2086, 10382), (2506, 8642), (4172, 5191), (4321, 5012)]