19825180

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{317}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 43273440

約数和(自身を除く): 23448260

約数列:

[1, 2, 4, 5, 10, 20, 53, 59, 106, 118, 212, 236, 265, 295, 317, 530, 590, 634, 1060, 1180, 1268, 1585, 3127, 3170, 6254, 6340, 12508, 15635, 16801, 18703, 31270, 33602, 37406, 62540, 67204, 74812, 84005, 93515, 168010, 187030, 336020, 374060, 991259, 1982518, 3965036, 4956295, 9912590, 19825180]

約数ペア:

[(1, 19825180), (2, 9912590), (4, 4956295), (5, 3965036), (10, 1982518), (20, 991259), (53, 374060), (59, 336020), (106, 187030), (118, 168010), (212, 93515), (236, 84005), (265, 74812), (295, 67204), (317, 62540), (530, 37406), (590, 33602), (634, 31270), (1060, 18703), (1180, 16801), (1268, 15635), (1585, 12508), (3127, 6340), (3170, 6254)]