21000992168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1\times {\mathrm{38677}}^1$

素因数の和:38946

約数の個数: 64

約数和(自身を含む): 44445663360

約数和(自身を除く): 23444671192

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 227, 299, 454, 598, 908, 1196, 1816, 2392, 2951, 5221, 5902, 10442, 11804, 20884, 23608, 38677, 41768, 67873, 77354, 135746, 154708, 271492, 309416, 502801, 542984, 889571, 1005602, 1779142, 2011204, 3558284, 4022408, 7116568, 8779679, 11564423, 17559358, 23128846, 35118716, 46257692, 70237432, 92515384, 114135827, 201932617, 228271654, 403865234, 456543308, 807730468, 913086616, 1615460936, 2625124021, 5250248042, 10500496084, 21000992168]

約数ペア:

[(1, 21000992168), (2, 10500496084), (4, 5250248042), (8, 2625124021), (13, 1615460936), (23, 913086616), (26, 807730468), (46, 456543308), (52, 403865234), (92, 228271654), (104, 201932617), (184, 114135827), (227, 92515384), (299, 70237432), (454, 46257692), (598, 35118716), (908, 23128846), (1196, 17559358), (1816, 11564423), (2392, 8779679), (2951, 7116568), (5221, 4022408), (5902, 3558284), (10442, 2011204), (11804, 1779142), (20884, 1005602), (23608, 889571), (38677, 542984), (41768, 502801), (67873, 309416), (77354, 271492), (135746, 154708)]