21657012

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 55954080

約数和(自身を除く): 34297068

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 59, 78, 118, 156, 169, 177, 181, 236, 338, 354, 362, 507, 543, 676, 708, 724, 767, 1014, 1086, 1534, 2028, 2172, 2301, 2353, 3068, 4602, 4706, 7059, 9204, 9412, 9971, 10679, 14118, 19942, 21358, 28236, 29913, 30589, 32037, 39884, 42716, 59826, 61178, 64074, 91767, 119652, 122356, 128148, 138827, 183534, 277654, 367068, 416481, 555308, 832962, 1665924, 1804751, 3609502, 5414253, 7219004, 10828506, 21657012]

約数ペア:

[(1, 21657012), (2, 10828506), (3, 7219004), (4, 5414253), (6, 3609502), (12, 1804751), (13, 1665924), (26, 832962), (39, 555308), (52, 416481), (59, 367068), (78, 277654), (118, 183534), (156, 138827), (169, 128148), (177, 122356), (181, 119652), (236, 91767), (338, 64074), (354, 61178), (362, 59826), (507, 42716), (543, 39884), (676, 32037), (708, 30589), (724, 29913), (767, 28236), (1014, 21358), (1086, 19942), (1534, 14118), (2028, 10679), (2172, 9971), (2301, 9412), (2353, 9204), (3068, 7059), (4602, 4706)]