20621156

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 20021404

約数列:

[1, 2, 4, 19, 23, 38, 46, 47, 76, 92, 94, 188, 251, 437, 502, 874, 893, 1004, 1081, 1748, 1786, 2162, 3572, 4324, 4769, 5773, 9538, 11546, 11797, 19076, 20539, 23092, 23594, 41078, 47188, 82156, 109687, 219374, 224143, 271331, 438748, 448286, 542662, 896572, 1085324, 5155289, 10310578, 20621156]

約数ペア:

[(1, 20621156), (2, 10310578), (4, 5155289), (19, 1085324), (23, 896572), (38, 542662), (46, 448286), (47, 438748), (76, 271331), (92, 224143), (94, 219374), (188, 109687), (251, 82156), (437, 47188), (502, 41078), (874, 23594), (893, 23092), (1004, 20539), (1081, 19076), (1748, 11797), (1786, 11546), (2162, 9538), (3572, 5773), (4324, 4769)]