21495780

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4423}}^1$

素因数の和:4447

約数の個数: 72

約数和(自身を含む): 67634112

約数和(自身を除く): 46138332

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4423, 4860, 8846, 13269, 17692, 22115, 26538, 39807, 44230, 53076, 66345, 79614, 88460, 119421, 132690, 159228, 199035, 238842, 265380, 358263, 398070, 477684, 597105, 716526, 796140, 1074789, 1194210, 1433052, 1791315, 2149578, 2388420, 3582630, 4299156, 5373945, 7165260, 10747890, 21495780]

約数ペア:

[(1, 21495780), (2, 10747890), (3, 7165260), (4, 5373945), (5, 4299156), (6, 3582630), (9, 2388420), (10, 2149578), (12, 1791315), (15, 1433052), (18, 1194210), (20, 1074789), (27, 796140), (30, 716526), (36, 597105), (45, 477684), (54, 398070), (60, 358263), (81, 265380), (90, 238842), (108, 199035), (135, 159228), (162, 132690), (180, 119421), (243, 88460), (270, 79614), (324, 66345), (405, 53076), (486, 44230), (540, 39807), (810, 26538), (972, 22115), (1215, 17692), (1620, 13269), (2430, 8846), (4423, 4860)]