2389940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 5884032

約数和(自身を除く): 3494092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 397, 430, 602, 794, 860, 1204, 1505, 1588, 1985, 2779, 3010, 3970, 5558, 6020, 7940, 11116, 13895, 17071, 27790, 34142, 55580, 68284, 85355, 119497, 170710, 238994, 341420, 477988, 597485, 1194970, 2389940]

約数ペア:

[(1, 2389940), (2, 1194970), (4, 597485), (5, 477988), (7, 341420), (10, 238994), (14, 170710), (20, 119497), (28, 85355), (35, 68284), (43, 55580), (70, 34142), (86, 27790), (140, 17071), (172, 13895), (215, 11116), (301, 7940), (397, 6020), (430, 5558), (602, 3970), (794, 3010), (860, 2779), (1204, 1985), (1505, 1588)]