12856940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 28304640

約数和(自身を除く): 15447700

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 233, 310, 356, 445, 466, 620, 890, 932, 1165, 1780, 2330, 2759, 4660, 5518, 7223, 11036, 13795, 14446, 20737, 27590, 28892, 36115, 41474, 55180, 72230, 82948, 103685, 144460, 207370, 414740, 642847, 1285694, 2571388, 3214235, 6428470, 12856940]

約数ペア:

[(1, 12856940), (2, 6428470), (4, 3214235), (5, 2571388), (10, 1285694), (20, 642847), (31, 414740), (62, 207370), (89, 144460), (124, 103685), (155, 82948), (178, 72230), (233, 55180), (310, 41474), (356, 36115), (445, 28892), (466, 27590), (620, 20737), (890, 14446), (932, 13795), (1165, 11036), (1780, 7223), (2330, 5518), (2759, 4660)]