81993040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60289}}^1$

素因数の和:60319

約数の個数: 40

約数和(自身を含む): 201850920

約数和(自身を除く): 119857880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 60289, 120578, 241156, 301445, 482312, 602890, 964624, 1024913, 1205780, 2049826, 2411560, 4099652, 4823120, 5124565, 8199304, 10249130, 16398608, 20498260, 40996520, 81993040]

約数ペア:

[(1, 81993040), (2, 40996520), (4, 20498260), (5, 16398608), (8, 10249130), (10, 8199304), (16, 5124565), (17, 4823120), (20, 4099652), (34, 2411560), (40, 2049826), (68, 1205780), (80, 1024913), (85, 964624), (136, 602890), (170, 482312), (272, 301445), (340, 241156), (680, 120578), (1360, 60289)]