20894580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:155

約数の個数: 216

約数和(自身を含む): 77680512

約数和(自身を除く): 56785932

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 49, 60, 63, 69, 70, 84, 90, 92, 98, 103, 105, 115, 126, 138, 140, 147, 161, 180, 196, 206, 207, 210, 230, 245, 252, 276, 294, 309, 315, 322, 345, 412, 414, 420, 441, 460, 483, 490, 515, 588, 618, 630, 644, 690, 721, 735, 805, 828, 882, 927, 966, 980, 1030, 1035, 1127, 1236, 1260, 1380, 1442, 1449, 1470, 1545, 1610, 1764, 1854, 1932, 2060, 2070, 2163, 2205, 2254, 2369, 2415, 2884, 2898, 2940, 3090, 3220, 3381, 3605, 3708, 4140, 4326, 4410, 4508, 4635, 4738, 4830, 5047, 5635, 5796, 6180, 6489, 6762, 7107, 7210, 7245, 8652, 8820, 9270, 9476, 9660, 10094, 10143, 10815, 11270, 11845, 12978, 13524, 14214, 14420, 14490, 15141, 16583, 16905, 18540, 20188, 20286, 21321, 21630, 22540, 23690, 25235, 25956, 28428, 28980, 30282, 32445, 33166, 33810, 35535, 40572, 42642, 43260, 45423, 47380, 49749, 50470, 50715, 60564, 64890, 66332, 67620, 71070, 75705, 82915, 85284, 90846, 99498, 100940, 101430, 106605, 116081, 129780, 142140, 149247, 151410, 165830, 181692, 198996, 202860, 213210, 227115, 232162, 248745, 298494, 302820, 331660, 348243, 426420, 454230, 464324, 497490, 580405, 596988, 696486, 746235, 908460, 994980, 1044729, 1160810, 1392972, 1492470, 1741215, 2089458, 2321620, 2984940, 3482430, 4178916, 5223645, 6964860, 10447290, 20894580]

約数ペア:

[(1, 20894580), (2, 10447290), (3, 6964860), (4, 5223645), (5, 4178916), (6, 3482430), (7, 2984940), (9, 2321620), (10, 2089458), (12, 1741215), (14, 1492470), (15, 1392972), (18, 1160810), (20, 1044729), (21, 994980), (23, 908460), (28, 746235), (30, 696486), (35, 596988), (36, 580405), (42, 497490), (45, 464324), (46, 454230), (49, 426420), (60, 348243), (63, 331660), (69, 302820), (70, 298494), (84, 248745), (90, 232162), (92, 227115), (98, 213210), (103, 202860), (105, 198996), (115, 181692), (126, 165830), (138, 151410), (140, 149247), (147, 142140), (161, 129780), (180, 116081), (196, 106605), (206, 101430), (207, 100940), (210, 99498), (230, 90846), (245, 85284), (252, 82915), (276, 75705), (294, 71070), (309, 67620), (315, 66332), (322, 64890), (345, 60564), (412, 50715), (414, 50470), (420, 49749), (441, 47380), (460, 45423), (483, 43260), (490, 42642), (515, 40572), (588, 35535), (618, 33810), (630, 33166), (644, 32445), (690, 30282), (721, 28980), (735, 28428), (805, 25956), (828, 25235), (882, 23690), (927, 22540), (966, 21630), (980, 21321), (1030, 20286), (1035, 20188), (1127, 18540), (1236, 16905), (1260, 16583), (1380, 15141), (1442, 14490), (1449, 14420), (1470, 14214), (1545, 13524), (1610, 12978), (1764, 11845), (1854, 11270), (1932, 10815), (2060, 10143), (2070, 10094), (2163, 9660), (2205, 9476), (2254, 9270), (2369, 8820), (2415, 8652), (2884, 7245), (2898, 7210), (2940, 7107), (3090, 6762), (3220, 6489), (3381, 6180), (3605, 5796), (3708, 5635), (4140, 5047), (4326, 4830), (4410, 4738), (4508, 4635)]