21339570

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:655

約数の個数: 64

約数和(自身を含む): 58899456

約数和(自身を除く): 37559886

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 307, 331, 614, 662, 921, 993, 1535, 1655, 1842, 1986, 2149, 2317, 3070, 3310, 4298, 4605, 4634, 4965, 6447, 6951, 9210, 9930, 10745, 11585, 12894, 13902, 21490, 23170, 32235, 34755, 64470, 69510, 101617, 203234, 304851, 508085, 609702, 711319, 1016170, 1422638, 1524255, 2133957, 3048510, 3556595, 4267914, 7113190, 10669785, 21339570]

約数ペア:

[(1, 21339570), (2, 10669785), (3, 7113190), (5, 4267914), (6, 3556595), (7, 3048510), (10, 2133957), (14, 1524255), (15, 1422638), (21, 1016170), (30, 711319), (35, 609702), (42, 508085), (70, 304851), (105, 203234), (210, 101617), (307, 69510), (331, 64470), (614, 34755), (662, 32235), (921, 23170), (993, 21490), (1535, 13902), (1655, 12894), (1842, 11585), (1986, 10745), (2149, 9930), (2317, 9210), (3070, 6951), (3310, 6447), (4298, 4965), (4605, 4634)]