81517280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39191}}^1$

素因数の和:39219

約数の個数: 48

約数和(自身を含む): 207404064

約数和(自身を除く): 125886784

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39191, 78382, 156764, 195955, 313528, 391910, 509483, 627056, 783820, 1018966, 1254112, 1567640, 2037932, 2547415, 3135280, 4075864, 5094830, 6270560, 8151728, 10189660, 16303456, 20379320, 40758640, 81517280]

約数ペア:

[(1, 81517280), (2, 40758640), (4, 20379320), (5, 16303456), (8, 10189660), (10, 8151728), (13, 6270560), (16, 5094830), (20, 4075864), (26, 3135280), (32, 2547415), (40, 2037932), (52, 1567640), (65, 1254112), (80, 1018966), (104, 783820), (130, 627056), (160, 509483), (208, 391910), (260, 313528), (416, 195955), (520, 156764), (1040, 78382), (2080, 39191)]