15911420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1277}}^1$

素因数の和:1382

約数の個数: 48

約数和(自身を含む): 38646720

約数和(自身を除く): 22735300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1277, 1780, 2492, 2554, 3115, 5108, 6230, 6385, 8939, 12460, 12770, 17878, 25540, 35756, 44695, 89390, 113653, 178780, 227306, 454612, 568265, 795571, 1136530, 1591142, 2273060, 3182284, 3977855, 7955710, 15911420]

約数ペア:

[(1, 15911420), (2, 7955710), (4, 3977855), (5, 3182284), (7, 2273060), (10, 1591142), (14, 1136530), (20, 795571), (28, 568265), (35, 454612), (70, 227306), (89, 178780), (140, 113653), (178, 89390), (356, 44695), (445, 35756), (623, 25540), (890, 17878), (1246, 12770), (1277, 12460), (1780, 8939), (2492, 6385), (2554, 6230), (3115, 5108)]