31972720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{433}}^1$

素因数の和:530

約数の個数: 80

約数和(自身を含む): 81369792

約数和(自身を除く): 49397072

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 71, 80, 104, 130, 142, 208, 260, 284, 355, 433, 520, 568, 710, 866, 923, 1040, 1136, 1420, 1732, 1846, 2165, 2840, 3464, 3692, 4330, 4615, 5629, 5680, 6928, 7384, 8660, 9230, 11258, 14768, 17320, 18460, 22516, 28145, 30743, 34640, 36920, 45032, 56290, 61486, 73840, 90064, 112580, 122972, 153715, 225160, 245944, 307430, 399659, 450320, 491888, 614860, 799318, 1229720, 1598636, 1998295, 2459440, 3197272, 3996590, 6394544, 7993180, 15986360, 31972720]

約数ペア:

[(1, 31972720), (2, 15986360), (4, 7993180), (5, 6394544), (8, 3996590), (10, 3197272), (13, 2459440), (16, 1998295), (20, 1598636), (26, 1229720), (40, 799318), (52, 614860), (65, 491888), (71, 450320), (80, 399659), (104, 307430), (130, 245944), (142, 225160), (208, 153715), (260, 122972), (284, 112580), (355, 90064), (433, 73840), (520, 61486), (568, 56290), (710, 45032), (866, 36920), (923, 34640), (1040, 30743), (1136, 28145), (1420, 22516), (1732, 18460), (1846, 17320), (2165, 14768), (2840, 11258), (3464, 9230), (3692, 8660), (4330, 7384), (4615, 6928), (5629, 5680)]