18168920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1$

素因数の和:393

約数の個数: 128

約数和(自身を含む): 54120960

約数和(自身を除く): 35952040

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 17, 20, 22, 28, 34, 35, 40, 44, 55, 56, 68, 70, 77, 85, 88, 110, 119, 136, 140, 154, 170, 187, 220, 238, 280, 308, 340, 347, 374, 385, 440, 476, 595, 616, 680, 694, 748, 770, 935, 952, 1190, 1309, 1388, 1496, 1540, 1735, 1870, 2380, 2429, 2618, 2776, 3080, 3470, 3740, 3817, 4760, 4858, 5236, 5899, 6545, 6940, 7480, 7634, 9716, 10472, 11798, 12145, 13090, 13880, 15268, 19085, 19432, 23596, 24290, 26180, 26719, 29495, 30536, 38170, 41293, 47192, 48580, 52360, 53438, 58990, 64889, 76340, 82586, 97160, 106876, 117980, 129778, 133595, 152680, 165172, 206465, 213752, 235960, 259556, 267190, 324445, 330344, 412930, 454223, 519112, 534380, 648890, 825860, 908446, 1068760, 1297780, 1651720, 1816892, 2271115, 2595560, 3633784, 4542230, 9084460, 18168920]

約数ペア:

[(1, 18168920), (2, 9084460), (4, 4542230), (5, 3633784), (7, 2595560), (8, 2271115), (10, 1816892), (11, 1651720), (14, 1297780), (17, 1068760), (20, 908446), (22, 825860), (28, 648890), (34, 534380), (35, 519112), (40, 454223), (44, 412930), (55, 330344), (56, 324445), (68, 267190), (70, 259556), (77, 235960), (85, 213752), (88, 206465), (110, 165172), (119, 152680), (136, 133595), (140, 129778), (154, 117980), (170, 106876), (187, 97160), (220, 82586), (238, 76340), (280, 64889), (308, 58990), (340, 53438), (347, 52360), (374, 48580), (385, 47192), (440, 41293), (476, 38170), (595, 30536), (616, 29495), (680, 26719), (694, 26180), (748, 24290), (770, 23596), (935, 19432), (952, 19085), (1190, 15268), (1309, 13880), (1388, 13090), (1496, 12145), (1540, 11798), (1735, 10472), (1870, 9716), (2380, 7634), (2429, 7480), (2618, 6940), (2776, 6545), (3080, 5899), (3470, 5236), (3740, 4858), (3817, 4760)]