21167720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4447}}^1$

素因数の和:4482

約数の個数: 64

約数和(自身を含む): 57646080

約数和(自身を除く): 36478360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4447, 4760, 8894, 17788, 22235, 31129, 35576, 44470, 62258, 75599, 88940, 124516, 151198, 155645, 177880, 249032, 302396, 311290, 377995, 529193, 604792, 622580, 755990, 1058386, 1245160, 1511980, 2116772, 2645965, 3023960, 4233544, 5291930, 10583860, 21167720]

約数ペア:

[(1, 21167720), (2, 10583860), (4, 5291930), (5, 4233544), (7, 3023960), (8, 2645965), (10, 2116772), (14, 1511980), (17, 1245160), (20, 1058386), (28, 755990), (34, 622580), (35, 604792), (40, 529193), (56, 377995), (68, 311290), (70, 302396), (85, 249032), (119, 177880), (136, 155645), (140, 151198), (170, 124516), (238, 88940), (280, 75599), (340, 62258), (476, 44470), (595, 35576), (680, 31129), (952, 22235), (1190, 17788), (2380, 8894), (4447, 4760)]