20401005890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{293413}}^1$

素因数の和:293846

約数の個数: 32

約数和(自身を含む): 38977115760

約数和(自身を除く): 18576109870

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 409, 818, 2045, 4090, 6953, 13906, 34765, 69530, 293413, 586826, 1467065, 2934130, 4988021, 9976042, 24940105, 49880210, 120005917, 240011834, 600029585, 1200059170, 2040100589, 4080201178, 10200502945, 20401005890]

約数ペア:

[(1, 20401005890), (2, 10200502945), (5, 4080201178), (10, 2040100589), (17, 1200059170), (34, 600029585), (85, 240011834), (170, 120005917), (409, 49880210), (818, 24940105), (2045, 9976042), (4090, 4988021), (6953, 2934130), (13906, 1467065), (34765, 586826), (69530, 293413)]