20807858680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1017997}}^1$

素因数の和:1018088

約数の個数: 64

約数和(自身を含む): 54238933440

約数和(自身を除く): 33431074760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 4088, 5110, 10220, 20440, 1017997, 2035994, 4071988, 5089985, 7125979, 8143976, 10179970, 14251958, 20359940, 28503916, 35629895, 40719880, 57007832, 71259790, 74313781, 142519580, 148627562, 285039160, 297255124, 371568905, 520196467, 594510248, 743137810, 1040392934, 1486275620, 2080785868, 2600982335, 2972551240, 4161571736, 5201964670, 10403929340, 20807858680]

約数ペア:

[(1, 20807858680), (2, 10403929340), (4, 5201964670), (5, 4161571736), (7, 2972551240), (8, 2600982335), (10, 2080785868), (14, 1486275620), (20, 1040392934), (28, 743137810), (35, 594510248), (40, 520196467), (56, 371568905), (70, 297255124), (73, 285039160), (140, 148627562), (146, 142519580), (280, 74313781), (292, 71259790), (365, 57007832), (511, 40719880), (584, 35629895), (730, 28503916), (1022, 20359940), (1460, 14251958), (2044, 10179970), (2555, 8143976), (2920, 7125979), (4088, 5089985), (5110, 4071988), (10220, 2035994), (20440, 1017997)]