78128380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{18691}}^1$

素因数の和:18730

約数の個数: 48

約数和(自身を含む): 188415360

約数和(自身を除く): 110286980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 18691, 37382, 74764, 93455, 186910, 205601, 355129, 373820, 411202, 710258, 822404, 1028005, 1420516, 1775645, 2056010, 3551290, 3906419, 4112020, 7102580, 7812838, 15625676, 19532095, 39064190, 78128380]

約数ペア:

[(1, 78128380), (2, 39064190), (4, 19532095), (5, 15625676), (10, 7812838), (11, 7102580), (19, 4112020), (20, 3906419), (22, 3551290), (38, 2056010), (44, 1775645), (55, 1420516), (76, 1028005), (95, 822404), (110, 710258), (190, 411202), (209, 373820), (220, 355129), (380, 205601), (418, 186910), (836, 93455), (1045, 74764), (2090, 37382), (4180, 18691)]