28780908

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^2$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 74955888

約数和(自身を除く): 46174980

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 53, 59, 78, 106, 118, 156, 159, 177, 212, 236, 318, 354, 636, 689, 708, 767, 1378, 1534, 2067, 2301, 2756, 3068, 3127, 3481, 4134, 4602, 6254, 6962, 8268, 9204, 9381, 10443, 12508, 13924, 18762, 20886, 37524, 40651, 41772, 45253, 81302, 90506, 121953, 135759, 162604, 181012, 184493, 243906, 271518, 368986, 487812, 543036, 553479, 737972, 1106958, 2213916, 2398409, 4796818, 7195227, 9593636, 14390454, 28780908]

約数ペア:

[(1, 28780908), (2, 14390454), (3, 9593636), (4, 7195227), (6, 4796818), (12, 2398409), (13, 2213916), (26, 1106958), (39, 737972), (52, 553479), (53, 543036), (59, 487812), (78, 368986), (106, 271518), (118, 243906), (156, 184493), (159, 181012), (177, 162604), (212, 135759), (236, 121953), (318, 90506), (354, 81302), (636, 45253), (689, 41772), (708, 40651), (767, 37524), (1378, 20886), (1534, 18762), (2067, 13924), (2301, 12508), (2756, 10443), (3068, 9381), (3127, 9204), (3481, 8268), (4134, 6962), (4602, 6254)]