389898160

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157217}}^1$

素因数の和:157261

約数の個数: 40

約数和(自身を含む): 935761536

約数和(自身を除く): 545863376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 157217, 314434, 628868, 786085, 1257736, 1572170, 2515472, 3144340, 4873727, 6288680, 9747454, 12577360, 19494908, 24368635, 38989816, 48737270, 77979632, 97474540, 194949080, 389898160]

約数ペア:

[(1, 389898160), (2, 194949080), (4, 97474540), (5, 77979632), (8, 48737270), (10, 38989816), (16, 24368635), (20, 19494908), (31, 12577360), (40, 9747454), (62, 6288680), (80, 4873727), (124, 3144340), (155, 2515472), (248, 1572170), (310, 1257736), (496, 786085), (620, 628868), (1240, 314434), (2480, 157217)]