85211980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{86951}}^1$

素因数の和:86974

約数の個数: 36

約数和(自身を含む): 208163088

約数和(自身を除く): 122951108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 86951, 173902, 347804, 434755, 608657, 869510, 1217314, 1739020, 2434628, 3043285, 4260599, 6086570, 8521198, 12173140, 17042396, 21302995, 42605990, 85211980]

約数ペア:

[(1, 85211980), (2, 42605990), (4, 21302995), (5, 17042396), (7, 12173140), (10, 8521198), (14, 6086570), (20, 4260599), (28, 3043285), (35, 2434628), (49, 1739020), (70, 1217314), (98, 869510), (140, 608657), (196, 434755), (245, 347804), (490, 173902), (980, 86951)]