20546820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{709}}^1$

素因数の和:754

約数の個数: 144

約数和(自身を含む): 74430720

約数和(自身を除く): 53883900

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, 60, 63, 69, 70, 84, 90, 92, 105, 115, 126, 138, 140, 161, 180, 207, 210, 230, 252, 276, 315, 322, 345, 414, 420, 460, 483, 630, 644, 690, 709, 805, 828, 966, 1035, 1260, 1380, 1418, 1449, 1610, 1932, 2070, 2127, 2415, 2836, 2898, 3220, 3545, 4140, 4254, 4830, 4963, 5796, 6381, 7090, 7245, 8508, 9660, 9926, 10635, 12762, 14180, 14490, 14889, 16307, 19852, 21270, 24815, 25524, 28980, 29778, 31905, 32614, 42540, 44667, 48921, 49630, 59556, 63810, 65228, 74445, 81535, 89334, 97842, 99260, 114149, 127620, 146763, 148890, 163070, 178668, 195684, 223335, 228298, 244605, 293526, 297780, 326140, 342447, 446670, 456596, 489210, 570745, 587052, 684894, 733815, 893340, 978420, 1027341, 1141490, 1369788, 1467630, 1712235, 2054682, 2282980, 2935260, 3424470, 4109364, 5136705, 6848940, 10273410, 20546820]

約数ペア:

[(1, 20546820), (2, 10273410), (3, 6848940), (4, 5136705), (5, 4109364), (6, 3424470), (7, 2935260), (9, 2282980), (10, 2054682), (12, 1712235), (14, 1467630), (15, 1369788), (18, 1141490), (20, 1027341), (21, 978420), (23, 893340), (28, 733815), (30, 684894), (35, 587052), (36, 570745), (42, 489210), (45, 456596), (46, 446670), (60, 342447), (63, 326140), (69, 297780), (70, 293526), (84, 244605), (90, 228298), (92, 223335), (105, 195684), (115, 178668), (126, 163070), (138, 148890), (140, 146763), (161, 127620), (180, 114149), (207, 99260), (210, 97842), (230, 89334), (252, 81535), (276, 74445), (315, 65228), (322, 63810), (345, 59556), (414, 49630), (420, 48921), (460, 44667), (483, 42540), (630, 32614), (644, 31905), (690, 29778), (709, 28980), (805, 25524), (828, 24815), (966, 21270), (1035, 19852), (1260, 16307), (1380, 14889), (1418, 14490), (1449, 14180), (1610, 12762), (1932, 10635), (2070, 9926), (2127, 9660), (2415, 8508), (2836, 7245), (2898, 7090), (3220, 6381), (3545, 5796), (4140, 4963), (4254, 4830)]