21067012

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{59}}^2\times {\mathrm{89}}^1$

素因数の和:228

約数の個数: 36

約数和(自身を含む): 40154940

約数和(自身を除く): 19087928

約数列:

[1, 2, 4, 17, 34, 59, 68, 89, 118, 178, 236, 356, 1003, 1513, 2006, 3026, 3481, 4012, 5251, 6052, 6962, 10502, 13924, 21004, 59177, 89267, 118354, 178534, 236708, 309809, 357068, 619618, 1239236, 5266753, 10533506, 21067012]

約数ペア:

[(1, 21067012), (2, 10533506), (4, 5266753), (17, 1239236), (34, 619618), (59, 357068), (68, 309809), (89, 236708), (118, 178534), (178, 118354), (236, 89267), (356, 59177), (1003, 21004), (1513, 13924), (2006, 10502), (3026, 6962), (3481, 6052), (4012, 5251)]