20023875

素因数分解:

$3^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 39312000

約数和(自身を除く): 19288125

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 125, 135, 153, 225, 255, 349, 375, 425, 459, 675, 765, 1047, 1125, 1275, 1745, 2125, 2295, 3141, 3375, 3825, 5235, 5933, 6375, 8725, 9423, 11475, 15705, 17799, 19125, 26175, 29665, 43625, 47115, 53397, 57375, 78525, 88995, 130875, 148325, 160191, 235575, 266985, 392625, 444975, 741625, 800955, 1177875, 1334925, 2224875, 4004775, 6674625, 20023875]

約数ペア:

[(1, 20023875), (3, 6674625), (5, 4004775), (9, 2224875), (15, 1334925), (17, 1177875), (25, 800955), (27, 741625), (45, 444975), (51, 392625), (75, 266985), (85, 235575), (125, 160191), (135, 148325), (153, 130875), (225, 88995), (255, 78525), (349, 57375), (375, 53397), (425, 47115), (459, 43625), (675, 29665), (765, 26175), (1047, 19125), (1125, 17799), (1275, 15705), (1745, 11475), (2125, 9423), (2295, 8725), (3141, 6375), (3375, 5933), (3825, 5235)]