21400356

素因数分解:

$2^2\times 3^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 51778496

約数和(自身を除く): 30378140

約数列:

[1, 2, 3, 4, 6, 12, 37, 74, 111, 148, 157, 222, 307, 314, 444, 471, 614, 628, 921, 942, 1228, 1842, 1884, 3684, 5809, 11359, 11618, 17427, 22718, 23236, 34077, 34854, 45436, 48199, 68154, 69708, 96398, 136308, 144597, 192796, 289194, 578388, 1783363, 3566726, 5350089, 7133452, 10700178, 21400356]

約数ペア:

[(1, 21400356), (2, 10700178), (3, 7133452), (4, 5350089), (6, 3566726), (12, 1783363), (37, 578388), (74, 289194), (111, 192796), (148, 144597), (157, 136308), (222, 96398), (307, 69708), (314, 68154), (444, 48199), (471, 45436), (614, 34854), (628, 34077), (921, 23236), (942, 22718), (1228, 17427), (1842, 11618), (1884, 11359), (3684, 5809)]