21631720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{233}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 53576640

約数和(自身を除く): 31944920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 211, 220, 233, 422, 440, 466, 844, 932, 1055, 1165, 1688, 1864, 2110, 2321, 2330, 2563, 4220, 4642, 4660, 5126, 8440, 9284, 9320, 10252, 11605, 12815, 18568, 20504, 23210, 25630, 46420, 49163, 51260, 92840, 98326, 102520, 196652, 245815, 393304, 491630, 540793, 983260, 1081586, 1966520, 2163172, 2703965, 4326344, 5407930, 10815860, 21631720]

約数ペア:

[(1, 21631720), (2, 10815860), (4, 5407930), (5, 4326344), (8, 2703965), (10, 2163172), (11, 1966520), (20, 1081586), (22, 983260), (40, 540793), (44, 491630), (55, 393304), (88, 245815), (110, 196652), (211, 102520), (220, 98326), (233, 92840), (422, 51260), (440, 49163), (466, 46420), (844, 25630), (932, 23210), (1055, 20504), (1165, 18568), (1688, 12815), (1864, 11605), (2110, 10252), (2321, 9320), (2330, 9284), (2563, 8440), (4220, 5126), (4642, 4660)]