20759340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:356

約数の個数: 144

約数和(自身を含む): 70785792

約数和(自身を除く): 50026452

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 49, 60, 69, 70, 84, 92, 98, 105, 115, 138, 140, 147, 161, 196, 210, 230, 245, 276, 294, 307, 322, 345, 420, 460, 483, 490, 588, 614, 644, 690, 735, 805, 921, 966, 980, 1127, 1228, 1380, 1470, 1535, 1610, 1842, 1932, 2149, 2254, 2415, 2940, 3070, 3220, 3381, 3684, 4298, 4508, 4605, 4830, 5635, 6140, 6447, 6762, 7061, 8596, 9210, 9660, 10745, 11270, 12894, 13524, 14122, 15043, 16905, 18420, 21183, 21490, 22540, 25788, 28244, 30086, 32235, 33810, 35305, 42366, 42980, 45129, 49427, 60172, 64470, 67620, 70610, 75215, 84732, 90258, 98854, 105915, 128940, 141220, 148281, 150430, 180516, 197708, 211830, 225645, 247135, 296562, 300860, 345989, 423660, 451290, 494270, 593124, 691978, 741405, 902580, 988540, 1037967, 1383956, 1482810, 1729945, 2075934, 2965620, 3459890, 4151868, 5189835, 6919780, 10379670, 20759340]

約数ペア:

[(1, 20759340), (2, 10379670), (3, 6919780), (4, 5189835), (5, 4151868), (6, 3459890), (7, 2965620), (10, 2075934), (12, 1729945), (14, 1482810), (15, 1383956), (20, 1037967), (21, 988540), (23, 902580), (28, 741405), (30, 691978), (35, 593124), (42, 494270), (46, 451290), (49, 423660), (60, 345989), (69, 300860), (70, 296562), (84, 247135), (92, 225645), (98, 211830), (105, 197708), (115, 180516), (138, 150430), (140, 148281), (147, 141220), (161, 128940), (196, 105915), (210, 98854), (230, 90258), (245, 84732), (276, 75215), (294, 70610), (307, 67620), (322, 64470), (345, 60172), (420, 49427), (460, 45129), (483, 42980), (490, 42366), (588, 35305), (614, 33810), (644, 32235), (690, 30086), (735, 28244), (805, 25788), (921, 22540), (966, 21490), (980, 21183), (1127, 18420), (1228, 16905), (1380, 15043), (1470, 14122), (1535, 13524), (1610, 12894), (1842, 11270), (1932, 10745), (2149, 9660), (2254, 9210), (2415, 8596), (2940, 7061), (3070, 6762), (3220, 6447), (3381, 6140), (3684, 5635), (4298, 4830), (4508, 4605)]