90181780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{26681}}^1$

素因数の和:26716

約数の個数: 36

約数和(自身を含む): 205077852

約数和(自身を除く): 114896072

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 26681, 53362, 106724, 133405, 266810, 346853, 533620, 693706, 1387412, 1734265, 3468530, 4509089, 6937060, 9018178, 18036356, 22545445, 45090890, 90181780]

約数ペア:

[(1, 90181780), (2, 45090890), (4, 22545445), (5, 18036356), (10, 9018178), (13, 6937060), (20, 4509089), (26, 3468530), (52, 1734265), (65, 1387412), (130, 693706), (169, 533620), (260, 346853), (338, 266810), (676, 133405), (845, 106724), (1690, 53362), (3380, 26681)]