20938000

素因数分解:

$2^4\times 5^3\times {\mathrm{19}}^2\times {\mathrm{29}}^1$

素因数の和:90

約数の個数: 120

約数和(自身を含む): 55275480

約数和(自身を除く): 34337480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 29, 38, 40, 50, 58, 76, 80, 95, 100, 116, 125, 145, 152, 190, 200, 232, 250, 290, 304, 361, 380, 400, 464, 475, 500, 551, 580, 722, 725, 760, 950, 1000, 1102, 1160, 1444, 1450, 1520, 1805, 1900, 2000, 2204, 2320, 2375, 2755, 2888, 2900, 3610, 3625, 3800, 4408, 4750, 5510, 5776, 5800, 7220, 7250, 7600, 8816, 9025, 9500, 10469, 11020, 11600, 13775, 14440, 14500, 18050, 19000, 20938, 22040, 27550, 28880, 29000, 36100, 38000, 41876, 44080, 45125, 52345, 55100, 58000, 68875, 72200, 83752, 90250, 104690, 110200, 137750, 144400, 167504, 180500, 209380, 220400, 261725, 275500, 361000, 418760, 523450, 551000, 722000, 837520, 1046900, 1102000, 1308625, 2093800, 2617250, 4187600, 5234500, 10469000, 20938000]

約数ペア:

[(1, 20938000), (2, 10469000), (4, 5234500), (5, 4187600), (8, 2617250), (10, 2093800), (16, 1308625), (19, 1102000), (20, 1046900), (25, 837520), (29, 722000), (38, 551000), (40, 523450), (50, 418760), (58, 361000), (76, 275500), (80, 261725), (95, 220400), (100, 209380), (116, 180500), (125, 167504), (145, 144400), (152, 137750), (190, 110200), (200, 104690), (232, 90250), (250, 83752), (290, 72200), (304, 68875), (361, 58000), (380, 55100), (400, 52345), (464, 45125), (475, 44080), (500, 41876), (551, 38000), (580, 36100), (722, 29000), (725, 28880), (760, 27550), (950, 22040), (1000, 20938), (1102, 19000), (1160, 18050), (1444, 14500), (1450, 14440), (1520, 13775), (1805, 11600), (1900, 11020), (2000, 10469), (2204, 9500), (2320, 9025), (2375, 8816), (2755, 7600), (2888, 7250), (2900, 7220), (3610, 5800), (3625, 5776), (3800, 5510), (4408, 4750)]