542784020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1021}}^1\times {\mathrm{1399}}^1$

素因数の和:2448

約数の個数: 48

約数和(自身を含む): 1201872000

約数和(自身を除く): 659087980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1021, 1399, 2042, 2798, 4084, 5105, 5596, 6995, 10210, 13990, 19399, 20420, 26581, 27980, 38798, 53162, 77596, 96995, 106324, 132905, 193990, 265810, 387980, 531620, 1428379, 2856758, 5713516, 7141895, 14283790, 27139201, 28567580, 54278402, 108556804, 135696005, 271392010, 542784020]

約数ペア:

[(1, 542784020), (2, 271392010), (4, 135696005), (5, 108556804), (10, 54278402), (19, 28567580), (20, 27139201), (38, 14283790), (76, 7141895), (95, 5713516), (190, 2856758), (380, 1428379), (1021, 531620), (1399, 387980), (2042, 265810), (2798, 193990), (4084, 132905), (5105, 106324), (5596, 96995), (6995, 77596), (10210, 53162), (13990, 38798), (19399, 27980), (20420, 26581)]