78439760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{140071}}^1$

素因数の和:140091

約数の個数: 40

約数和(自身を含む): 208427136

約数和(自身を除く): 129987376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 140071, 280142, 560284, 700355, 980497, 1120568, 1400710, 1960994, 2241136, 2801420, 3921988, 4902485, 5602840, 7843976, 9804970, 11205680, 15687952, 19609940, 39219880, 78439760]

約数ペア:

[(1, 78439760), (2, 39219880), (4, 19609940), (5, 15687952), (7, 11205680), (8, 9804970), (10, 7843976), (14, 5602840), (16, 4902485), (20, 3921988), (28, 2801420), (35, 2241136), (40, 1960994), (56, 1400710), (70, 1120568), (80, 980497), (112, 700355), (140, 560284), (280, 280142), (560, 140071)]