21000547715

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1\times {\mathrm{2767}}^1$

素因数の和:3012

約数の個数: 64

約数和(自身を含む): 30898851840

約数和(自身を除く): 9898304125

約数列:

[1, 5, 7, 19, 35, 95, 101, 113, 133, 505, 565, 665, 707, 791, 1919, 2147, 2767, 3535, 3955, 9595, 10735, 11413, 13433, 13835, 15029, 19369, 52573, 57065, 67165, 75145, 79891, 96845, 216847, 262865, 279467, 312671, 368011, 399455, 1084235, 1397335, 1517929, 1563355, 1840055, 1956269, 2188697, 5309873, 5940749, 7589645, 9781345, 10943485, 26549365, 29703745, 31579771, 37169111, 41585243, 157898855, 185845555, 207926215, 221058397, 600015649, 1105291985, 3000078245, 4200109543, 21000547715]

約数ペア:

[(1, 21000547715), (5, 4200109543), (7, 3000078245), (19, 1105291985), (35, 600015649), (95, 221058397), (101, 207926215), (113, 185845555), (133, 157898855), (505, 41585243), (565, 37169111), (665, 31579771), (707, 29703745), (791, 26549365), (1919, 10943485), (2147, 9781345), (2767, 7589645), (3535, 5940749), (3955, 5309873), (9595, 2188697), (10735, 1956269), (11413, 1840055), (13433, 1563355), (13835, 1517929), (15029, 1397335), (19369, 1084235), (52573, 399455), (57065, 368011), (67165, 312671), (75145, 279467), (79891, 262865), (96845, 216847)]