20815676968

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{719}}^1\times {\mathrm{2081}}^1$

素因数の和:2890

約数の個数: 64

約数和(自身を含む): 41013734400

約数和(自身を除く): 20198057432

約数列:

[1, 2, 4, 8, 37, 47, 74, 94, 148, 188, 296, 376, 719, 1438, 1739, 2081, 2876, 3478, 4162, 5752, 6956, 8324, 13912, 16648, 26603, 33793, 53206, 67586, 76997, 97807, 106412, 135172, 153994, 195614, 212824, 270344, 307988, 391228, 615976, 782456, 1250341, 1496239, 2500682, 2992478, 3618859, 5001364, 5984956, 7237718, 10002728, 11969912, 14475436, 28950872, 55360843, 70323233, 110721686, 140646466, 221443372, 281292932, 442886744, 562585864, 2601959621, 5203919242, 10407838484, 20815676968]

約数ペア:

[(1, 20815676968), (2, 10407838484), (4, 5203919242), (8, 2601959621), (37, 562585864), (47, 442886744), (74, 281292932), (94, 221443372), (148, 140646466), (188, 110721686), (296, 70323233), (376, 55360843), (719, 28950872), (1438, 14475436), (1739, 11969912), (2081, 10002728), (2876, 7237718), (3478, 5984956), (4162, 5001364), (5752, 3618859), (6956, 2992478), (8324, 2500682), (13912, 1496239), (16648, 1250341), (26603, 782456), (33793, 615976), (53206, 391228), (67586, 307988), (76997, 270344), (97807, 212824), (106412, 195614), (135172, 153994)]