20218246840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1\times {\mathrm{2081}}^1$

素因数の和:2485

約数の個数: 128

約数和(自身を含む): 50511651840

約数和(自身を除く): 30293405000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 311, 355, 440, 568, 622, 710, 781, 1244, 1420, 1555, 1562, 2081, 2488, 2840, 3110, 3124, 3421, 3905, 4162, 6220, 6248, 6842, 7810, 8324, 10405, 12440, 13684, 15620, 16648, 17105, 20810, 22081, 22891, 27368, 31240, 34210, 41620, 44162, 45782, 68420, 83240, 88324, 91564, 110405, 114455, 136840, 147751, 176648, 183128, 220810, 228910, 242891, 295502, 441620, 457820, 485782, 591004, 647191, 738755, 883240, 915640, 971564, 1182008, 1214455, 1294382, 1477510, 1625261, 1943128, 2428910, 2588764, 2955020, 3235955, 3250522, 4857820, 5177528, 5910040, 6471910, 6501044, 7119101, 8126305, 9715640, 12943820, 13002088, 14238202, 16252610, 25887640, 28476404, 32505220, 35595505, 45950561, 56952808, 65010440, 71191010, 91901122, 142382020, 183802244, 229752805, 284764040, 367604488, 459505610, 505456171, 919011220, 1010912342, 1838022440, 2021824684, 2527280855, 4043649368, 5054561710, 10109123420, 20218246840]

約数ペア:

[(1, 20218246840), (2, 10109123420), (4, 5054561710), (5, 4043649368), (8, 2527280855), (10, 2021824684), (11, 1838022440), (20, 1010912342), (22, 919011220), (40, 505456171), (44, 459505610), (55, 367604488), (71, 284764040), (88, 229752805), (110, 183802244), (142, 142382020), (220, 91901122), (284, 71191010), (311, 65010440), (355, 56952808), (440, 45950561), (568, 35595505), (622, 32505220), (710, 28476404), (781, 25887640), (1244, 16252610), (1420, 14238202), (1555, 13002088), (1562, 12943820), (2081, 9715640), (2488, 8126305), (2840, 7119101), (3110, 6501044), (3124, 6471910), (3421, 5910040), (3905, 5177528), (4162, 4857820), (6220, 3250522), (6248, 3235955), (6842, 2955020), (7810, 2588764), (8324, 2428910), (10405, 1943128), (12440, 1625261), (13684, 1477510), (15620, 1294382), (16648, 1214455), (17105, 1182008), (20810, 971564), (22081, 915640), (22891, 883240), (27368, 738755), (31240, 647191), (34210, 591004), (41620, 485782), (44162, 457820), (45782, 441620), (68420, 295502), (83240, 242891), (88324, 228910), (91564, 220810), (110405, 183128), (114455, 176648), (136840, 147751)]