20438040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{839}}^1$

素因数の和:889

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 52137960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 29, 30, 35, 40, 42, 56, 58, 60, 70, 84, 87, 105, 116, 120, 140, 145, 168, 174, 203, 210, 232, 280, 290, 348, 406, 420, 435, 580, 609, 696, 812, 839, 840, 870, 1015, 1160, 1218, 1624, 1678, 1740, 2030, 2436, 2517, 3045, 3356, 3480, 4060, 4195, 4872, 5034, 5873, 6090, 6712, 8120, 8390, 10068, 11746, 12180, 12585, 16780, 17619, 20136, 23492, 24331, 24360, 25170, 29365, 33560, 35238, 46984, 48662, 50340, 58730, 70476, 72993, 88095, 97324, 100680, 117460, 121655, 140952, 145986, 170317, 176190, 194648, 234920, 243310, 291972, 340634, 352380, 364965, 486620, 510951, 583944, 681268, 704760, 729930, 851585, 973240, 1021902, 1362536, 1459860, 1703170, 2043804, 2554755, 2919720, 3406340, 4087608, 5109510, 6812680, 10219020, 20438040]

約数ペア:

[(1, 20438040), (2, 10219020), (3, 6812680), (4, 5109510), (5, 4087608), (6, 3406340), (7, 2919720), (8, 2554755), (10, 2043804), (12, 1703170), (14, 1459860), (15, 1362536), (20, 1021902), (21, 973240), (24, 851585), (28, 729930), (29, 704760), (30, 681268), (35, 583944), (40, 510951), (42, 486620), (56, 364965), (58, 352380), (60, 340634), (70, 291972), (84, 243310), (87, 234920), (105, 194648), (116, 176190), (120, 170317), (140, 145986), (145, 140952), (168, 121655), (174, 117460), (203, 100680), (210, 97324), (232, 88095), (280, 72993), (290, 70476), (348, 58730), (406, 50340), (420, 48662), (435, 46984), (580, 35238), (609, 33560), (696, 29365), (812, 25170), (839, 24360), (840, 24331), (870, 23492), (1015, 20136), (1160, 17619), (1218, 16780), (1624, 12585), (1678, 12180), (1740, 11746), (2030, 10068), (2436, 8390), (2517, 8120), (3045, 6712), (3356, 6090), (3480, 5873), (4060, 5034), (4195, 4872)]