17249980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 40007520

約数和(自身を除く): 22757540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 881, 890, 979, 1762, 1780, 1958, 3524, 3916, 4405, 4895, 8810, 9691, 9790, 17620, 19382, 19580, 38764, 48455, 78409, 96910, 156818, 193820, 313636, 392045, 784090, 862499, 1568180, 1724998, 3449996, 4312495, 8624990, 17249980]

約数ペア:

[(1, 17249980), (2, 8624990), (4, 4312495), (5, 3449996), (10, 1724998), (11, 1568180), (20, 862499), (22, 784090), (44, 392045), (55, 313636), (89, 193820), (110, 156818), (178, 96910), (220, 78409), (356, 48455), (445, 38764), (881, 19580), (890, 19382), (979, 17620), (1762, 9790), (1780, 9691), (1958, 8810), (3524, 4895), (3916, 4405)]