21291800

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3671}}^1$

素因数の和:3716

約数の個数: 48

約数和(自身を含む): 51224400

約数和(自身を除く): 29932600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 145, 200, 232, 290, 580, 725, 1160, 1450, 2900, 3671, 5800, 7342, 14684, 18355, 29368, 36710, 73420, 91775, 106459, 146840, 183550, 212918, 367100, 425836, 532295, 734200, 851672, 1064590, 2129180, 2661475, 4258360, 5322950, 10645900, 21291800]

約数ペア:

[(1, 21291800), (2, 10645900), (4, 5322950), (5, 4258360), (8, 2661475), (10, 2129180), (20, 1064590), (25, 851672), (29, 734200), (40, 532295), (50, 425836), (58, 367100), (100, 212918), (116, 183550), (145, 146840), (200, 106459), (232, 91775), (290, 73420), (580, 36710), (725, 29368), (1160, 18355), (1450, 14684), (2900, 7342), (3671, 5800)]