21305640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4129}}^1$

素因数の和:4186

約数の個数: 64

約数和(自身を含む): 65419200

約数和(自身を除く): 44113560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4129, 5160, 8258, 12387, 16516, 20645, 24774, 33032, 41290, 49548, 61935, 82580, 99096, 123870, 165160, 177547, 247740, 355094, 495480, 532641, 710188, 887735, 1065282, 1420376, 1775470, 2130564, 2663205, 3550940, 4261128, 5326410, 7101880, 10652820, 21305640]

約数ペア:

[(1, 21305640), (2, 10652820), (3, 7101880), (4, 5326410), (5, 4261128), (6, 3550940), (8, 2663205), (10, 2130564), (12, 1775470), (15, 1420376), (20, 1065282), (24, 887735), (30, 710188), (40, 532641), (43, 495480), (60, 355094), (86, 247740), (120, 177547), (129, 165160), (172, 123870), (215, 99096), (258, 82580), (344, 61935), (430, 49548), (516, 41290), (645, 33032), (860, 24774), (1032, 20645), (1290, 16516), (1720, 12387), (2580, 8258), (4129, 5160)]