12938780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 28788480

約数和(自身を除く): 15849700

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 509, 620, 820, 1018, 1271, 2036, 2542, 2545, 5084, 5090, 6355, 10180, 12710, 15779, 20869, 25420, 31558, 41738, 63116, 78895, 83476, 104345, 157790, 208690, 315580, 417380, 646939, 1293878, 2587756, 3234695, 6469390, 12938780]

約数ペア:

[(1, 12938780), (2, 6469390), (4, 3234695), (5, 2587756), (10, 1293878), (20, 646939), (31, 417380), (41, 315580), (62, 208690), (82, 157790), (124, 104345), (155, 83476), (164, 78895), (205, 63116), (310, 41738), (410, 31558), (509, 25420), (620, 20869), (820, 15779), (1018, 12710), (1271, 10180), (2036, 6355), (2542, 5090), (2545, 5084)]