220131920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:724

約数の個数: 80

約数和(自身を含む): 527704320

約数和(自身を除く): 307572400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 79, 80, 122, 158, 244, 305, 316, 395, 488, 571, 610, 632, 790, 976, 1142, 1220, 1264, 1580, 2284, 2440, 2855, 3160, 4568, 4819, 4880, 5710, 6320, 9136, 9638, 11420, 19276, 22840, 24095, 34831, 38552, 45109, 45680, 48190, 69662, 77104, 90218, 96380, 139324, 174155, 180436, 192760, 225545, 278648, 348310, 360872, 385520, 451090, 557296, 696620, 721744, 902180, 1393240, 1804360, 2751649, 2786480, 3608720, 5503298, 11006596, 13758245, 22013192, 27516490, 44026384, 55032980, 110065960, 220131920]

約数ペア:

[(1, 220131920), (2, 110065960), (4, 55032980), (5, 44026384), (8, 27516490), (10, 22013192), (16, 13758245), (20, 11006596), (40, 5503298), (61, 3608720), (79, 2786480), (80, 2751649), (122, 1804360), (158, 1393240), (244, 902180), (305, 721744), (316, 696620), (395, 557296), (488, 451090), (571, 385520), (610, 360872), (632, 348310), (790, 278648), (976, 225545), (1142, 192760), (1220, 180436), (1264, 174155), (1580, 139324), (2284, 96380), (2440, 90218), (2855, 77104), (3160, 69662), (4568, 48190), (4819, 45680), (4880, 45109), (5710, 38552), (6320, 34831), (9136, 24095), (9638, 22840), (11420, 19276)]