20747820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20341}}^1$

素因数の和:20370

約数の個数: 48

約数和(自身を含む): 61514208

約数和(自身を除く): 40766388

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20341, 40682, 61023, 81364, 101705, 122046, 203410, 244092, 305115, 345797, 406820, 610230, 691594, 1037391, 1220460, 1383188, 1728985, 2074782, 3457970, 4149564, 5186955, 6915940, 10373910, 20747820]

約数ペア:

[(1, 20747820), (2, 10373910), (3, 6915940), (4, 5186955), (5, 4149564), (6, 3457970), (10, 2074782), (12, 1728985), (15, 1383188), (17, 1220460), (20, 1037391), (30, 691594), (34, 610230), (51, 406820), (60, 345797), (68, 305115), (85, 244092), (102, 203410), (170, 122046), (204, 101705), (255, 81364), (340, 61023), (510, 40682), (1020, 20341)]