21139950

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1$

素因数の和:358

約数の個数: 96

約数和(自身を含む): 58183776

約数和(自身を除く): 37043826

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 37, 39, 50, 65, 74, 75, 78, 111, 130, 150, 185, 195, 222, 293, 325, 370, 390, 481, 555, 586, 650, 879, 925, 962, 975, 1110, 1443, 1465, 1758, 1850, 1950, 2405, 2775, 2886, 2930, 3809, 4395, 4810, 5550, 7215, 7325, 7618, 8790, 10841, 11427, 12025, 14430, 14650, 19045, 21682, 21975, 22854, 24050, 32523, 36075, 38090, 43950, 54205, 57135, 65046, 72150, 95225, 108410, 114270, 140933, 162615, 190450, 271025, 281866, 285675, 325230, 422799, 542050, 571350, 704665, 813075, 845598, 1409330, 1626150, 2113995, 3523325, 4227990, 7046650, 10569975, 21139950]

約数ペア:

[(1, 21139950), (2, 10569975), (3, 7046650), (5, 4227990), (6, 3523325), (10, 2113995), (13, 1626150), (15, 1409330), (25, 845598), (26, 813075), (30, 704665), (37, 571350), (39, 542050), (50, 422799), (65, 325230), (74, 285675), (75, 281866), (78, 271025), (111, 190450), (130, 162615), (150, 140933), (185, 114270), (195, 108410), (222, 95225), (293, 72150), (325, 65046), (370, 57135), (390, 54205), (481, 43950), (555, 38090), (586, 36075), (650, 32523), (879, 24050), (925, 22854), (962, 21975), (975, 21682), (1110, 19045), (1443, 14650), (1465, 14430), (1758, 12025), (1850, 11427), (1950, 10841), (2405, 8790), (2775, 7618), (2886, 7325), (2930, 7215), (3809, 5550), (4395, 4810)]