21631600

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1319}}^1$

素因数の和:1378

約数の個数: 60

約数和(自身を含む): 53277840

約数和(自身を除く): 31646240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1319, 1640, 2050, 2638, 3280, 4100, 5276, 6595, 8200, 10552, 13190, 16400, 21104, 26380, 32975, 52760, 54079, 65950, 105520, 108158, 131900, 216316, 263800, 270395, 432632, 527600, 540790, 865264, 1081580, 1351975, 2163160, 2703950, 4326320, 5407900, 10815800, 21631600]

約数ペア:

[(1, 21631600), (2, 10815800), (4, 5407900), (5, 4326320), (8, 2703950), (10, 2163160), (16, 1351975), (20, 1081580), (25, 865264), (40, 540790), (41, 527600), (50, 432632), (80, 270395), (82, 263800), (100, 216316), (164, 131900), (200, 108158), (205, 105520), (328, 65950), (400, 54079), (410, 52760), (656, 32975), (820, 26380), (1025, 21104), (1319, 16400), (1640, 13190), (2050, 10552), (2638, 8200), (3280, 6595), (4100, 5276)]