21075340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7369}}^1$

素因数の和:7402

約数の個数: 48

約数和(自身を含む): 52002720

約数和(自身を除く): 30927380

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7369, 14738, 29476, 36845, 73690, 81059, 95797, 147380, 162118, 191594, 324236, 383188, 405295, 478985, 810590, 957970, 1053767, 1621180, 1915940, 2107534, 4215068, 5268835, 10537670, 21075340]

約数ペア:

[(1, 21075340), (2, 10537670), (4, 5268835), (5, 4215068), (10, 2107534), (11, 1915940), (13, 1621180), (20, 1053767), (22, 957970), (26, 810590), (44, 478985), (52, 405295), (55, 383188), (65, 324236), (110, 191594), (130, 162118), (143, 147380), (220, 95797), (260, 81059), (286, 73690), (572, 36845), (715, 29476), (1430, 14738), (2860, 7369)]