20177906920

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{421}}^1\times {\mathrm{7351}}^1$

素因数の和:7946

約数の個数: 64

約数和(自身を含む): 45793549440

約数和(自身を除く): 25615642520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 421, 652, 815, 842, 1304, 1630, 1684, 2105, 3260, 3368, 4210, 6520, 7351, 8420, 14702, 16840, 29404, 36755, 58808, 68623, 73510, 137246, 147020, 274492, 294040, 343115, 548984, 686230, 1198213, 1372460, 2396426, 2744920, 3094771, 4792852, 5991065, 6189542, 9585704, 11982130, 12379084, 15473855, 23964260, 24758168, 30947710, 47928520, 61895420, 123790840, 504447673, 1008895346, 2017790692, 2522238365, 4035581384, 5044476730, 10088953460, 20177906920]

約数ペア:

[(1, 20177906920), (2, 10088953460), (4, 5044476730), (5, 4035581384), (8, 2522238365), (10, 2017790692), (20, 1008895346), (40, 504447673), (163, 123790840), (326, 61895420), (421, 47928520), (652, 30947710), (815, 24758168), (842, 23964260), (1304, 15473855), (1630, 12379084), (1684, 11982130), (2105, 9585704), (3260, 6189542), (3368, 5991065), (4210, 4792852), (6520, 3094771), (7351, 2744920), (8420, 2396426), (14702, 1372460), (16840, 1198213), (29404, 686230), (36755, 548984), (58808, 343115), (68623, 294040), (73510, 274492), (137246, 147020)]