21598785

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 64

約数和(自身を含む): 42792960

約数和(自身を除く): 21194175

約数列:

[1, 3, 5, 9, 13, 15, 27, 31, 39, 45, 65, 93, 117, 135, 155, 195, 279, 351, 397, 403, 465, 585, 837, 1191, 1209, 1395, 1755, 1985, 2015, 3573, 3627, 4185, 5161, 5955, 6045, 10719, 10881, 12307, 15483, 17865, 18135, 25805, 36921, 46449, 53595, 54405, 61535, 77415, 110763, 139347, 159991, 184605, 232245, 332289, 479973, 553815, 696735, 799955, 1439919, 1661445, 2399865, 4319757, 7199595, 21598785]

約数ペア:

[(1, 21598785), (3, 7199595), (5, 4319757), (9, 2399865), (13, 1661445), (15, 1439919), (27, 799955), (31, 696735), (39, 553815), (45, 479973), (65, 332289), (93, 232245), (117, 184605), (135, 159991), (155, 139347), (195, 110763), (279, 77415), (351, 61535), (397, 54405), (403, 53595), (465, 46449), (585, 36921), (837, 25805), (1191, 18135), (1209, 17865), (1395, 15483), (1755, 12307), (1985, 10881), (2015, 10719), (3573, 6045), (3627, 5955), (4185, 5161)]