128728920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1$

素因数の和:497

約数の個数: 128

約数和(自身を含む): 402739200

約数和(自身を除く): 274010280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 79, 111, 120, 148, 158, 185, 222, 237, 296, 316, 367, 370, 395, 444, 474, 555, 632, 734, 740, 790, 888, 948, 1101, 1110, 1185, 1468, 1480, 1580, 1835, 1896, 2202, 2220, 2370, 2923, 2936, 3160, 3670, 4404, 4440, 4740, 5505, 5846, 7340, 8769, 8808, 9480, 11010, 11692, 13579, 14615, 14680, 17538, 22020, 23384, 27158, 28993, 29230, 35076, 40737, 43845, 44040, 54316, 57986, 58460, 67895, 70152, 81474, 86979, 87690, 108632, 115972, 116920, 135790, 144965, 162948, 173958, 175380, 203685, 231944, 271580, 289930, 325896, 347916, 350760, 407370, 434895, 543160, 579860, 695832, 814740, 869790, 1072741, 1159720, 1629480, 1739580, 2145482, 3218223, 3479160, 4290964, 5363705, 6436446, 8581928, 10727410, 12872892, 16091115, 21454820, 25745784, 32182230, 42909640, 64364460, 128728920]

約数ペア:

[(1, 128728920), (2, 64364460), (3, 42909640), (4, 32182230), (5, 25745784), (6, 21454820), (8, 16091115), (10, 12872892), (12, 10727410), (15, 8581928), (20, 6436446), (24, 5363705), (30, 4290964), (37, 3479160), (40, 3218223), (60, 2145482), (74, 1739580), (79, 1629480), (111, 1159720), (120, 1072741), (148, 869790), (158, 814740), (185, 695832), (222, 579860), (237, 543160), (296, 434895), (316, 407370), (367, 350760), (370, 347916), (395, 325896), (444, 289930), (474, 271580), (555, 231944), (632, 203685), (734, 175380), (740, 173958), (790, 162948), (888, 144965), (948, 135790), (1101, 116920), (1110, 115972), (1185, 108632), (1468, 87690), (1480, 86979), (1580, 81474), (1835, 70152), (1896, 67895), (2202, 58460), (2220, 57986), (2370, 54316), (2923, 44040), (2936, 43845), (3160, 40737), (3670, 35076), (4404, 29230), (4440, 28993), (4740, 27158), (5505, 23384), (5846, 22020), (7340, 17538), (8769, 14680), (8808, 14615), (9480, 13579), (11010, 11692)]