78774920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281339}}^1$

素因数の和:281357

約数の個数: 32

約数和(自身を含む): 202564800

約数和(自身を除く): 123789880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281339, 562678, 1125356, 1406695, 1969373, 2250712, 2813390, 3938746, 5626780, 7877492, 9846865, 11253560, 15754984, 19693730, 39387460, 78774920]

約数ペア:

[(1, 78774920), (2, 39387460), (4, 19693730), (5, 15754984), (7, 11253560), (8, 9846865), (10, 7877492), (14, 5626780), (20, 3938746), (28, 2813390), (35, 2250712), (40, 1969373), (56, 1406695), (70, 1125356), (140, 562678), (280, 281339)]