20125408

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:527

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 22210592

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 79, 152, 158, 304, 316, 419, 608, 632, 838, 1264, 1501, 1676, 2528, 3002, 3352, 6004, 6704, 7961, 12008, 13408, 15922, 24016, 31844, 33101, 48032, 63688, 66202, 127376, 132404, 254752, 264808, 529616, 628919, 1059232, 1257838, 2515676, 5031352, 10062704, 20125408]

約数ペア:

[(1, 20125408), (2, 10062704), (4, 5031352), (8, 2515676), (16, 1257838), (19, 1059232), (32, 628919), (38, 529616), (76, 264808), (79, 254752), (152, 132404), (158, 127376), (304, 66202), (316, 63688), (419, 48032), (608, 33101), (632, 31844), (838, 24016), (1264, 15922), (1501, 13408), (1676, 12008), (2528, 7961), (3002, 6704), (3352, 6004)]