81677560

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{331}}^1$

素因数の和:572

約数の個数: 64

約数和(自身を含む): 191232000

約数和(自身を除く): 109554440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 199, 248, 310, 331, 398, 620, 662, 796, 995, 1240, 1324, 1592, 1655, 1990, 2648, 3310, 3980, 6169, 6620, 7960, 10261, 12338, 13240, 20522, 24676, 30845, 41044, 49352, 51305, 61690, 65869, 82088, 102610, 123380, 131738, 205220, 246760, 263476, 329345, 410440, 526952, 658690, 1317380, 2041939, 2634760, 4083878, 8167756, 10209695, 16335512, 20419390, 40838780, 81677560]

約数ペア:

[(1, 81677560), (2, 40838780), (4, 20419390), (5, 16335512), (8, 10209695), (10, 8167756), (20, 4083878), (31, 2634760), (40, 2041939), (62, 1317380), (124, 658690), (155, 526952), (199, 410440), (248, 329345), (310, 263476), (331, 246760), (398, 205220), (620, 131738), (662, 123380), (796, 102610), (995, 82088), (1240, 65869), (1324, 61690), (1592, 51305), (1655, 49352), (1990, 41044), (2648, 30845), (3310, 24676), (3980, 20522), (6169, 13240), (6620, 12338), (7960, 10261)]