20718390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8969}}^1$

素因数の和:8997

約数の個数: 64

約数和(自身を含む): 62000640

約数和(自身を除く): 41282250

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 105, 110, 154, 165, 210, 231, 330, 385, 462, 770, 1155, 2310, 8969, 17938, 26907, 44845, 53814, 62783, 89690, 98659, 125566, 134535, 188349, 197318, 269070, 295977, 313915, 376698, 493295, 591954, 627830, 690613, 941745, 986590, 1381226, 1479885, 1883490, 2071839, 2959770, 3453065, 4143678, 6906130, 10359195, 20718390]

約数ペア:

[(1, 20718390), (2, 10359195), (3, 6906130), (5, 4143678), (6, 3453065), (7, 2959770), (10, 2071839), (11, 1883490), (14, 1479885), (15, 1381226), (21, 986590), (22, 941745), (30, 690613), (33, 627830), (35, 591954), (42, 493295), (55, 376698), (66, 313915), (70, 295977), (77, 269070), (105, 197318), (110, 188349), (154, 134535), (165, 125566), (210, 98659), (231, 89690), (330, 62783), (385, 53814), (462, 44845), (770, 26907), (1155, 17938), (2310, 8969)]