42205580

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 90810720

約数和(自身を除く): 48605140

約数列:

[1, 2, 4, 5, 10, 20, 89, 131, 178, 181, 262, 356, 362, 445, 524, 655, 724, 890, 905, 1310, 1780, 1810, 2620, 3620, 11659, 16109, 23318, 23711, 32218, 46636, 47422, 58295, 64436, 80545, 94844, 116590, 118555, 161090, 233180, 237110, 322180, 474220, 2110279, 4220558, 8441116, 10551395, 21102790, 42205580]

約数ペア:

[(1, 42205580), (2, 21102790), (4, 10551395), (5, 8441116), (10, 4220558), (20, 2110279), (89, 474220), (131, 322180), (178, 237110), (181, 233180), (262, 161090), (356, 118555), (362, 116590), (445, 94844), (524, 80545), (655, 64436), (724, 58295), (890, 47422), (905, 46636), (1310, 32218), (1780, 23711), (1810, 23318), (2620, 16109), (3620, 11659)]