21760725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 41525120

約数和(自身を除く): 19764395

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 181, 229, 525, 543, 687, 905, 1145, 1267, 1603, 2715, 3435, 3801, 4525, 4809, 5725, 6335, 8015, 13575, 17175, 19005, 24045, 31675, 40075, 41449, 95025, 120225, 124347, 207245, 290143, 621735, 870429, 1036225, 1450715, 3108675, 4352145, 7253575, 21760725]

約数ペア:

[(1, 21760725), (3, 7253575), (5, 4352145), (7, 3108675), (15, 1450715), (21, 1036225), (25, 870429), (35, 621735), (75, 290143), (105, 207245), (175, 124347), (181, 120225), (229, 95025), (525, 41449), (543, 40075), (687, 31675), (905, 24045), (1145, 19005), (1267, 17175), (1603, 13575), (2715, 8015), (3435, 6335), (3801, 5725), (4525, 4809)]