78835840

素因数分解:

$2^7\times 5^1\times {\mathrm{199}}^1\times {\mathrm{619}}^1$

素因数の和:837

約数の個数: 64

約数和(自身を含む): 189720000

約数和(自身を除く): 110884160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 320, 398, 619, 640, 796, 995, 1238, 1592, 1990, 2476, 3095, 3184, 3980, 4952, 6190, 6368, 7960, 9904, 12380, 12736, 15920, 19808, 24760, 25472, 31840, 39616, 49520, 63680, 79232, 99040, 123181, 127360, 198080, 246362, 396160, 492724, 615905, 985448, 1231810, 1970896, 2463620, 3941792, 4927240, 7883584, 9854480, 15767168, 19708960, 39417920, 78835840]

約数ペア:

[(1, 78835840), (2, 39417920), (4, 19708960), (5, 15767168), (8, 9854480), (10, 7883584), (16, 4927240), (20, 3941792), (32, 2463620), (40, 1970896), (64, 1231810), (80, 985448), (128, 615905), (160, 492724), (199, 396160), (320, 246362), (398, 198080), (619, 127360), (640, 123181), (796, 99040), (995, 79232), (1238, 63680), (1592, 49520), (1990, 39616), (2476, 31840), (3095, 25472), (3184, 24760), (3980, 19808), (4952, 15920), (6190, 12736), (6368, 12380), (7960, 9904)]