20755800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{887}}^1$

素因数の和:922

約数の個数: 144

約数和(自身を含む): 75151440

約数和(自身を除く): 54395640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 25, 26, 30, 36, 39, 40, 45, 50, 52, 60, 65, 72, 75, 78, 90, 100, 104, 117, 120, 130, 150, 156, 180, 195, 200, 225, 234, 260, 300, 312, 325, 360, 390, 450, 468, 520, 585, 600, 650, 780, 887, 900, 936, 975, 1170, 1300, 1560, 1774, 1800, 1950, 2340, 2600, 2661, 2925, 3548, 3900, 4435, 4680, 5322, 5850, 7096, 7800, 7983, 8870, 10644, 11531, 11700, 13305, 15966, 17740, 21288, 22175, 23062, 23400, 26610, 31932, 34593, 35480, 39915, 44350, 46124, 53220, 57655, 63864, 66525, 69186, 79830, 88700, 92248, 103779, 106440, 115310, 133050, 138372, 159660, 172965, 177400, 199575, 207558, 230620, 266100, 276744, 288275, 319320, 345930, 399150, 415116, 461240, 518895, 532200, 576550, 691860, 798300, 830232, 864825, 1037790, 1153100, 1383720, 1596600, 1729650, 2075580, 2306200, 2594475, 3459300, 4151160, 5188950, 6918600, 10377900, 20755800]

約数ペア:

[(1, 20755800), (2, 10377900), (3, 6918600), (4, 5188950), (5, 4151160), (6, 3459300), (8, 2594475), (9, 2306200), (10, 2075580), (12, 1729650), (13, 1596600), (15, 1383720), (18, 1153100), (20, 1037790), (24, 864825), (25, 830232), (26, 798300), (30, 691860), (36, 576550), (39, 532200), (40, 518895), (45, 461240), (50, 415116), (52, 399150), (60, 345930), (65, 319320), (72, 288275), (75, 276744), (78, 266100), (90, 230620), (100, 207558), (104, 199575), (117, 177400), (120, 172965), (130, 159660), (150, 138372), (156, 133050), (180, 115310), (195, 106440), (200, 103779), (225, 92248), (234, 88700), (260, 79830), (300, 69186), (312, 66525), (325, 63864), (360, 57655), (390, 53220), (450, 46124), (468, 44350), (520, 39915), (585, 35480), (600, 34593), (650, 31932), (780, 26610), (887, 23400), (900, 23062), (936, 22175), (975, 21288), (1170, 17740), (1300, 15966), (1560, 13305), (1774, 11700), (1800, 11531), (1950, 10644), (2340, 8870), (2600, 7983), (2661, 7800), (2925, 7096), (3548, 5850), (3900, 5322), (4435, 4680)]