90242000

素因数分解:

$2^4\times 5^3\times {\mathrm{45121}}^1$

素因数の和:45144

約数の個数: 40

約数和(自身を含む): 218209992

約数和(自身を除く): 127967992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 45121, 90242, 180484, 225605, 360968, 451210, 721936, 902420, 1128025, 1804840, 2256050, 3609680, 4512100, 5640125, 9024200, 11280250, 18048400, 22560500, 45121000, 90242000]

約数ペア:

[(1, 90242000), (2, 45121000), (4, 22560500), (5, 18048400), (8, 11280250), (10, 9024200), (16, 5640125), (20, 4512100), (25, 3609680), (40, 2256050), (50, 1804840), (80, 1128025), (100, 902420), (125, 721936), (200, 451210), (250, 360968), (400, 225605), (500, 180484), (1000, 90242), (2000, 45121)]