21511300

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{2417}}^1$

素因数の和:2520

約数の個数: 36

約数和(自身を含む): 47223540

約数和(自身を除く): 25712240

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 2417, 4450, 4834, 8900, 9668, 12085, 24170, 48340, 60425, 120850, 215113, 241700, 430226, 860452, 1075565, 2151130, 4302260, 5377825, 10755650, 21511300]

約数ペア:

[(1, 21511300), (2, 10755650), (4, 5377825), (5, 4302260), (10, 2151130), (20, 1075565), (25, 860452), (50, 430226), (89, 241700), (100, 215113), (178, 120850), (356, 60425), (445, 48340), (890, 24170), (1780, 12085), (2225, 9668), (2417, 8900), (4450, 4834)]