21631725

素因数分解:

$3^3\times 5^2\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 40374400

約数和(自身を除く): 18742675

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 73, 75, 135, 219, 225, 365, 439, 657, 675, 1095, 1317, 1825, 1971, 2195, 3285, 3951, 5475, 6585, 9855, 10975, 11853, 16425, 19755, 32047, 32925, 49275, 59265, 96141, 98775, 160235, 288423, 296325, 480705, 801175, 865269, 1442115, 2403525, 4326345, 7210575, 21631725]

約数ペア:

[(1, 21631725), (3, 7210575), (5, 4326345), (9, 2403525), (15, 1442115), (25, 865269), (27, 801175), (45, 480705), (73, 296325), (75, 288423), (135, 160235), (219, 98775), (225, 96141), (365, 59265), (439, 49275), (657, 32925), (675, 32047), (1095, 19755), (1317, 16425), (1825, 11853), (1971, 10975), (2195, 9855), (3285, 6585), (3951, 5475)]