289198720

素因数分解:

$2^7\times 5^1\times {\mathrm{451873}}^1$

素因数の和:451892

約数の個数: 32

約数和(自身を含む): 691367220

約数和(自身を除く): 402168500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 451873, 903746, 1807492, 2259365, 3614984, 4518730, 7229968, 9037460, 14459936, 18074920, 28919872, 36149840, 57839744, 72299680, 144599360, 289198720]

約数ペア:

[(1, 289198720), (2, 144599360), (4, 72299680), (5, 57839744), (8, 36149840), (10, 28919872), (16, 18074920), (20, 14459936), (32, 9037460), (40, 7229968), (64, 4518730), (80, 3614984), (128, 2259365), (160, 1807492), (320, 903746), (640, 451873)]