21665650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 43390080

約数和(自身を除く): 21724430

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 71, 85, 142, 170, 355, 359, 425, 710, 718, 850, 1207, 1775, 1795, 2414, 3550, 3590, 6035, 6103, 8975, 12070, 12206, 17950, 25489, 30175, 30515, 50978, 60350, 61030, 127445, 152575, 254890, 305150, 433313, 637225, 866626, 1274450, 2166565, 4333130, 10832825, 21665650]

約数ペア:

[(1, 21665650), (2, 10832825), (5, 4333130), (10, 2166565), (17, 1274450), (25, 866626), (34, 637225), (50, 433313), (71, 305150), (85, 254890), (142, 152575), (170, 127445), (355, 61030), (359, 60350), (425, 50978), (710, 30515), (718, 30175), (850, 25489), (1207, 17950), (1775, 12206), (1795, 12070), (2414, 8975), (3550, 6103), (3590, 6035)]