20796220

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 24594020

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 157, 179, 185, 314, 358, 370, 628, 716, 740, 785, 895, 1570, 1790, 3140, 3580, 5809, 6623, 11618, 13246, 23236, 26492, 28103, 29045, 33115, 56206, 58090, 66230, 112412, 116180, 132460, 140515, 281030, 562060, 1039811, 2079622, 4159244, 5199055, 10398110, 20796220]

約数ペア:

[(1, 20796220), (2, 10398110), (4, 5199055), (5, 4159244), (10, 2079622), (20, 1039811), (37, 562060), (74, 281030), (148, 140515), (157, 132460), (179, 116180), (185, 112412), (314, 66230), (358, 58090), (370, 56206), (628, 33115), (716, 29045), (740, 28103), (785, 26492), (895, 23236), (1570, 13246), (1790, 11618), (3140, 6623), (3580, 5809)]