399721910

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{116537}}^1$

素因数の和:116565

約数の個数: 32

約数和(自身を含む): 839073600

約数和(自身を除く): 439351690

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 116537, 233074, 582685, 815759, 1165370, 1631518, 4078795, 5710313, 8157590, 11420626, 28551565, 39972191, 57103130, 79944382, 199860955, 399721910]

約数ペア:

[(1, 399721910), (2, 199860955), (5, 79944382), (7, 57103130), (10, 39972191), (14, 28551565), (35, 11420626), (49, 8157590), (70, 5710313), (98, 4078795), (245, 1631518), (343, 1165370), (490, 815759), (686, 582685), (1715, 233074), (3430, 116537)]