20264080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8171}}^1$

素因数の和:8215

約数の個数: 40

約数和(自身を含む): 48639744

約数和(自身を除く): 28375664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8171, 16342, 32684, 40855, 65368, 81710, 130736, 163420, 253301, 326840, 506602, 653680, 1013204, 1266505, 2026408, 2533010, 4052816, 5066020, 10132040, 20264080]

約数ペア:

[(1, 20264080), (2, 10132040), (4, 5066020), (5, 4052816), (8, 2533010), (10, 2026408), (16, 1266505), (20, 1013204), (31, 653680), (40, 506602), (62, 326840), (80, 253301), (124, 163420), (155, 130736), (248, 81710), (310, 65368), (496, 40855), (620, 32684), (1240, 16342), (2480, 8171)]