80748160

素因数分解:

$2^7\times 5^1\times {\mathrm{281}}^1\times {\mathrm{449}}^1$

素因数の和:749

約数の個数: 64

約数和(自身を含む): 194157000

約数和(自身を除く): 113408840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 281, 320, 449, 562, 640, 898, 1124, 1405, 1796, 2245, 2248, 2810, 3592, 4490, 4496, 5620, 7184, 8980, 8992, 11240, 14368, 17960, 17984, 22480, 28736, 35920, 35968, 44960, 57472, 71840, 89920, 126169, 143680, 179840, 252338, 287360, 504676, 630845, 1009352, 1261690, 2018704, 2523380, 4037408, 5046760, 8074816, 10093520, 16149632, 20187040, 40374080, 80748160]

約数ペア:

[(1, 80748160), (2, 40374080), (4, 20187040), (5, 16149632), (8, 10093520), (10, 8074816), (16, 5046760), (20, 4037408), (32, 2523380), (40, 2018704), (64, 1261690), (80, 1009352), (128, 630845), (160, 504676), (281, 287360), (320, 252338), (449, 179840), (562, 143680), (640, 126169), (898, 89920), (1124, 71840), (1405, 57472), (1796, 44960), (2245, 35968), (2248, 35920), (2810, 28736), (3592, 22480), (4490, 17984), (4496, 17960), (5620, 14368), (7184, 11240), (8980, 8992)]