28921900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1$

素因数の和:623

約数の個数: 72

約数和(自身を含む): 72773120

約数和(自身を除く): 43851220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 79, 100, 140, 158, 175, 316, 350, 395, 523, 553, 700, 790, 1046, 1106, 1580, 1975, 2092, 2212, 2615, 2765, 3661, 3950, 5230, 5530, 7322, 7900, 10460, 11060, 13075, 13825, 14644, 18305, 26150, 27650, 36610, 41317, 52300, 55300, 73220, 82634, 91525, 165268, 183050, 206585, 289219, 366100, 413170, 578438, 826340, 1032925, 1156876, 1446095, 2065850, 2892190, 4131700, 5784380, 7230475, 14460950, 28921900]

約数ペア:

[(1, 28921900), (2, 14460950), (4, 7230475), (5, 5784380), (7, 4131700), (10, 2892190), (14, 2065850), (20, 1446095), (25, 1156876), (28, 1032925), (35, 826340), (50, 578438), (70, 413170), (79, 366100), (100, 289219), (140, 206585), (158, 183050), (175, 165268), (316, 91525), (350, 82634), (395, 73220), (523, 55300), (553, 52300), (700, 41317), (790, 36610), (1046, 27650), (1106, 26150), (1580, 18305), (1975, 14644), (2092, 13825), (2212, 13075), (2615, 11060), (2765, 10460), (3661, 7900), (3950, 7322), (5230, 5530)]