20209540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4091}}^1$

素因数の和:4132

約数の個数: 48

約数和(自身を含む): 48121920

約数和(自身を除く): 27912380

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4091, 4940, 8182, 16364, 20455, 40910, 53183, 77729, 81820, 106366, 155458, 212732, 265915, 310916, 388645, 531830, 777290, 1010477, 1063660, 1554580, 2020954, 4041908, 5052385, 10104770, 20209540]

約数ペア:

[(1, 20209540), (2, 10104770), (4, 5052385), (5, 4041908), (10, 2020954), (13, 1554580), (19, 1063660), (20, 1010477), (26, 777290), (38, 531830), (52, 388645), (65, 310916), (76, 265915), (95, 212732), (130, 155458), (190, 106366), (247, 81820), (260, 77729), (380, 53183), (494, 40910), (988, 20455), (1235, 16364), (2470, 8182), (4091, 4940)]