12909020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 28643328

約数和(自身を除く): 15734308

約数列:

[1, 2, 4, 5, 10, 20, 31, 47, 62, 94, 124, 155, 188, 235, 310, 443, 470, 620, 886, 940, 1457, 1772, 2215, 2914, 4430, 5828, 7285, 8860, 13733, 14570, 20821, 27466, 29140, 41642, 54932, 68665, 83284, 104105, 137330, 208210, 274660, 416420, 645451, 1290902, 2581804, 3227255, 6454510, 12909020]

約数ペア:

[(1, 12909020), (2, 6454510), (4, 3227255), (5, 2581804), (10, 1290902), (20, 645451), (31, 416420), (47, 274660), (62, 208210), (94, 137330), (124, 104105), (155, 83284), (188, 68665), (235, 54932), (310, 41642), (443, 29140), (470, 27466), (620, 20821), (886, 14570), (940, 13733), (1457, 8860), (1772, 7285), (2215, 5828), (2914, 4430)]