40778000

素因数分解:

$2^4\times 5^3\times {\mathrm{20389}}^1$

素因数の和:20412

約数の個数: 40

約数和(自身を含む): 98606040

約数和(自身を除く): 57828040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 20389, 40778, 81556, 101945, 163112, 203890, 326224, 407780, 509725, 815560, 1019450, 1631120, 2038900, 2548625, 4077800, 5097250, 8155600, 10194500, 20389000, 40778000]

約数ペア:

[(1, 40778000), (2, 20389000), (4, 10194500), (5, 8155600), (8, 5097250), (10, 4077800), (16, 2548625), (20, 2038900), (25, 1631120), (40, 1019450), (50, 815560), (80, 509725), (100, 407780), (125, 326224), (200, 203890), (250, 163112), (400, 101945), (500, 81556), (1000, 40778), (2000, 20389)]