81901020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71843}}^1$

素因数の和:71874

約数の個数: 48

約数和(自身を含む): 241395840

約数和(自身を除く): 159494820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 71843, 143686, 215529, 287372, 359215, 431058, 718430, 862116, 1077645, 1365017, 1436860, 2155290, 2730034, 4095051, 4310580, 5460068, 6825085, 8190102, 13650170, 16380204, 20475255, 27300340, 40950510, 81901020]

約数ペア:

[(1, 81901020), (2, 40950510), (3, 27300340), (4, 20475255), (5, 16380204), (6, 13650170), (10, 8190102), (12, 6825085), (15, 5460068), (19, 4310580), (20, 4095051), (30, 2730034), (38, 2155290), (57, 1436860), (60, 1365017), (76, 1077645), (95, 862116), (114, 718430), (190, 431058), (228, 359215), (285, 287372), (380, 215529), (570, 143686), (1140, 71843)]