28197780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36151}}^1$

素因数の和:36176

約数の個数: 48

約数和(自身を含む): 85029504

約数和(自身を除く): 56831724

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 36151, 72302, 108453, 144604, 180755, 216906, 361510, 433812, 469963, 542265, 723020, 939926, 1084530, 1409889, 1879852, 2169060, 2349815, 2819778, 4699630, 5639556, 7049445, 9399260, 14098890, 28197780]

約数ペア:

[(1, 28197780), (2, 14098890), (3, 9399260), (4, 7049445), (5, 5639556), (6, 4699630), (10, 2819778), (12, 2349815), (13, 2169060), (15, 1879852), (20, 1409889), (26, 1084530), (30, 939926), (39, 723020), (52, 542265), (60, 469963), (65, 433812), (78, 361510), (130, 216906), (156, 180755), (195, 144604), (260, 108453), (390, 72302), (780, 36151)]