20674940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7229}}^1$

素因数の和:7262

約数の個数: 48

約数和(自身を含む): 51014880

約数和(自身を除く): 30339940

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7229, 14458, 28916, 36145, 72290, 79519, 93977, 144580, 159038, 187954, 318076, 375908, 397595, 469885, 795190, 939770, 1033747, 1590380, 1879540, 2067494, 4134988, 5168735, 10337470, 20674940]

約数ペア:

[(1, 20674940), (2, 10337470), (4, 5168735), (5, 4134988), (10, 2067494), (11, 1879540), (13, 1590380), (20, 1033747), (22, 939770), (26, 795190), (44, 469885), (52, 397595), (55, 375908), (65, 318076), (110, 187954), (130, 159038), (143, 144580), (220, 93977), (260, 79519), (286, 72290), (572, 36145), (715, 28916), (1430, 14458), (2860, 7229)]