21817880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1163}}^1$

素因数の和:1248

約数の個数: 64

約数和(自身を含む): 56989440

約数和(自身を除く): 35171560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1163, 1340, 1876, 2326, 2345, 2680, 3752, 4652, 4690, 5815, 8141, 9304, 9380, 11630, 16282, 18760, 23260, 32564, 40705, 46520, 65128, 77921, 81410, 155842, 162820, 311684, 325640, 389605, 545447, 623368, 779210, 1090894, 1558420, 2181788, 2727235, 3116840, 4363576, 5454470, 10908940, 21817880]

約数ペア:

[(1, 21817880), (2, 10908940), (4, 5454470), (5, 4363576), (7, 3116840), (8, 2727235), (10, 2181788), (14, 1558420), (20, 1090894), (28, 779210), (35, 623368), (40, 545447), (56, 389605), (67, 325640), (70, 311684), (134, 162820), (140, 155842), (268, 81410), (280, 77921), (335, 65128), (469, 46520), (536, 40705), (670, 32564), (938, 23260), (1163, 18760), (1340, 16282), (1876, 11630), (2326, 9380), (2345, 9304), (2680, 8141), (3752, 5815), (4652, 4690)]