21871150

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:218

約数の個数: 72

約数和(自身を含む): 48345120

約数和(自身を除く): 26473970

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 79, 98, 113, 158, 175, 226, 245, 350, 395, 490, 553, 565, 790, 791, 1106, 1130, 1225, 1582, 1975, 2450, 2765, 2825, 3871, 3950, 3955, 5530, 5537, 5650, 7742, 7910, 8927, 11074, 13825, 17854, 19355, 19775, 27650, 27685, 38710, 39550, 44635, 55370, 62489, 89270, 96775, 124978, 138425, 193550, 223175, 276850, 312445, 437423, 446350, 624890, 874846, 1562225, 2187115, 3124450, 4374230, 10935575, 21871150]

約数ペア:

[(1, 21871150), (2, 10935575), (5, 4374230), (7, 3124450), (10, 2187115), (14, 1562225), (25, 874846), (35, 624890), (49, 446350), (50, 437423), (70, 312445), (79, 276850), (98, 223175), (113, 193550), (158, 138425), (175, 124978), (226, 96775), (245, 89270), (350, 62489), (395, 55370), (490, 44635), (553, 39550), (565, 38710), (790, 27685), (791, 27650), (1106, 19775), (1130, 19355), (1225, 17854), (1582, 13825), (1975, 11074), (2450, 8927), (2765, 7910), (2825, 7742), (3871, 5650), (3950, 5537), (3955, 5530)]