28812140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1571}}^1$

素因数の和:1718

約数の個数: 48

約数和(自身を含む): 69721344

約数和(自身を除く): 40909204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1310, 1571, 1834, 2620, 3142, 3668, 4585, 6284, 7855, 9170, 10997, 15710, 18340, 21994, 31420, 43988, 54985, 109970, 205801, 219940, 411602, 823204, 1029005, 1440607, 2058010, 2881214, 4116020, 5762428, 7203035, 14406070, 28812140]

約数ペア:

[(1, 28812140), (2, 14406070), (4, 7203035), (5, 5762428), (7, 4116020), (10, 2881214), (14, 2058010), (20, 1440607), (28, 1029005), (35, 823204), (70, 411602), (131, 219940), (140, 205801), (262, 109970), (524, 54985), (655, 43988), (917, 31420), (1310, 21994), (1571, 18340), (1834, 15710), (2620, 10997), (3142, 9170), (3668, 7855), (4585, 6284)]