20731810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 22450910

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 67, 97, 110, 134, 145, 194, 290, 319, 335, 485, 638, 670, 737, 970, 1067, 1474, 1595, 1943, 2134, 2813, 3190, 3685, 3886, 5335, 5626, 6499, 7370, 9715, 10670, 12998, 14065, 19430, 21373, 28130, 30943, 32495, 42746, 61886, 64990, 71489, 106865, 142978, 154715, 188471, 213730, 309430, 357445, 376942, 714890, 942355, 1884710, 2073181, 4146362, 10365905, 20731810]

約数ペア:

[(1, 20731810), (2, 10365905), (5, 4146362), (10, 2073181), (11, 1884710), (22, 942355), (29, 714890), (55, 376942), (58, 357445), (67, 309430), (97, 213730), (110, 188471), (134, 154715), (145, 142978), (194, 106865), (290, 71489), (319, 64990), (335, 61886), (485, 42746), (638, 32495), (670, 30943), (737, 28130), (970, 21373), (1067, 19430), (1474, 14065), (1595, 12998), (1943, 10670), (2134, 9715), (2813, 7370), (3190, 6499), (3685, 5626), (3886, 5335)]