20807970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9769}}^1$

素因数の和:9850

約数の個数: 32

約数和(自身を含む): 50647680

約数和(自身を除く): 29839710

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130, 9769, 19538, 29307, 48845, 58614, 97690, 146535, 293070, 693599, 1387198, 2080797, 3467995, 4161594, 6935990, 10403985, 20807970]

約数ペア:

[(1, 20807970), (2, 10403985), (3, 6935990), (5, 4161594), (6, 3467995), (10, 2080797), (15, 1387198), (30, 693599), (71, 293070), (142, 146535), (213, 97690), (355, 58614), (426, 48845), (710, 29307), (1065, 19538), (2130, 9769)]