18396400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:179

約数の個数: 120

約数和(自身を含む): 49956624

約数和(自身を除く): 31560224

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 37, 40, 44, 50, 55, 74, 80, 88, 100, 110, 113, 148, 176, 185, 200, 220, 226, 275, 296, 370, 400, 407, 440, 452, 550, 565, 592, 740, 814, 880, 904, 925, 1100, 1130, 1243, 1480, 1628, 1808, 1850, 2035, 2200, 2260, 2486, 2825, 2960, 3256, 3700, 4070, 4181, 4400, 4520, 4972, 5650, 6215, 6512, 7400, 8140, 8362, 9040, 9944, 10175, 11300, 12430, 14800, 16280, 16724, 19888, 20350, 20905, 22600, 24860, 31075, 32560, 33448, 40700, 41810, 45200, 45991, 49720, 62150, 66896, 81400, 83620, 91982, 99440, 104525, 124300, 162800, 167240, 183964, 209050, 229955, 248600, 334480, 367928, 418100, 459910, 497200, 735856, 836200, 919820, 1149775, 1672400, 1839640, 2299550, 3679280, 4599100, 9198200, 18396400]

約数ペア:

[(1, 18396400), (2, 9198200), (4, 4599100), (5, 3679280), (8, 2299550), (10, 1839640), (11, 1672400), (16, 1149775), (20, 919820), (22, 836200), (25, 735856), (37, 497200), (40, 459910), (44, 418100), (50, 367928), (55, 334480), (74, 248600), (80, 229955), (88, 209050), (100, 183964), (110, 167240), (113, 162800), (148, 124300), (176, 104525), (185, 99440), (200, 91982), (220, 83620), (226, 81400), (275, 66896), (296, 62150), (370, 49720), (400, 45991), (407, 45200), (440, 41810), (452, 40700), (550, 33448), (565, 32560), (592, 31075), (740, 24860), (814, 22600), (880, 20905), (904, 20350), (925, 19888), (1100, 16724), (1130, 16280), (1243, 14800), (1480, 12430), (1628, 11300), (1808, 10175), (1850, 9944), (2035, 9040), (2200, 8362), (2260, 8140), (2486, 7400), (2825, 6512), (2960, 6215), (3256, 5650), (3700, 4972), (4070, 4520), (4181, 4400)]