19997250

素因数分解:

$2^1\times 3^1\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1$

素因数の和:333

約数の個数: 128

約数和(自身を含む): 61641216

約数和(自身を除く): 41643966

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 25, 26, 30, 35, 39, 42, 50, 65, 70, 75, 78, 91, 105, 125, 130, 150, 175, 182, 195, 210, 250, 273, 293, 325, 350, 375, 390, 455, 525, 546, 586, 650, 750, 875, 879, 910, 975, 1050, 1365, 1465, 1625, 1750, 1758, 1950, 2051, 2275, 2625, 2730, 2930, 3250, 3809, 4102, 4395, 4550, 4875, 5250, 6153, 6825, 7325, 7618, 8790, 9750, 10255, 11375, 11427, 12306, 13650, 14650, 19045, 20510, 21975, 22750, 22854, 26663, 30765, 34125, 36625, 38090, 43950, 51275, 53326, 57135, 61530, 68250, 73250, 79989, 95225, 102550, 109875, 114270, 133315, 153825, 159978, 190450, 219750, 256375, 266630, 285675, 307650, 399945, 476125, 512750, 571350, 666575, 769125, 799890, 952250, 1333150, 1428375, 1538250, 1999725, 2856750, 3332875, 3999450, 6665750, 9998625, 19997250]

約数ペア:

[(1, 19997250), (2, 9998625), (3, 6665750), (5, 3999450), (6, 3332875), (7, 2856750), (10, 1999725), (13, 1538250), (14, 1428375), (15, 1333150), (21, 952250), (25, 799890), (26, 769125), (30, 666575), (35, 571350), (39, 512750), (42, 476125), (50, 399945), (65, 307650), (70, 285675), (75, 266630), (78, 256375), (91, 219750), (105, 190450), (125, 159978), (130, 153825), (150, 133315), (175, 114270), (182, 109875), (195, 102550), (210, 95225), (250, 79989), (273, 73250), (293, 68250), (325, 61530), (350, 57135), (375, 53326), (390, 51275), (455, 43950), (525, 38090), (546, 36625), (586, 34125), (650, 30765), (750, 26663), (875, 22854), (879, 22750), (910, 21975), (975, 20510), (1050, 19045), (1365, 14650), (1465, 13650), (1625, 12306), (1750, 11427), (1758, 11375), (1950, 10255), (2051, 9750), (2275, 8790), (2625, 7618), (2730, 7325), (2930, 6825), (3250, 6153), (3809, 5250), (4102, 4875), (4395, 4550)]