21400652

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 48397104

約数和(自身を除く): 26996452

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 49, 52, 74, 91, 98, 148, 182, 196, 227, 259, 364, 454, 481, 518, 637, 908, 962, 1036, 1274, 1589, 1813, 1924, 2548, 2951, 3178, 3367, 3626, 5902, 6356, 6734, 7252, 8399, 11123, 11804, 13468, 16798, 20657, 22246, 23569, 33596, 41314, 44492, 47138, 58793, 82628, 94276, 109187, 117586, 144599, 218374, 235172, 289198, 411551, 436748, 578396, 764309, 823102, 1528618, 1646204, 3057236, 5350163, 10700326, 21400652]

約数ペア:

[(1, 21400652), (2, 10700326), (4, 5350163), (7, 3057236), (13, 1646204), (14, 1528618), (26, 823102), (28, 764309), (37, 578396), (49, 436748), (52, 411551), (74, 289198), (91, 235172), (98, 218374), (148, 144599), (182, 117586), (196, 109187), (227, 94276), (259, 82628), (364, 58793), (454, 47138), (481, 44492), (518, 41314), (637, 33596), (908, 23569), (962, 22246), (1036, 20657), (1274, 16798), (1589, 13468), (1813, 11804), (1924, 11123), (2548, 8399), (2951, 7252), (3178, 6734), (3367, 6356), (3626, 5902)]