18681520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 160

約数和(自身を含む): 53996544

約数和(自身を除く): 35315024

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 23, 26, 40, 44, 46, 52, 55, 65, 71, 80, 88, 92, 104, 110, 115, 130, 142, 143, 176, 184, 208, 220, 230, 253, 260, 284, 286, 299, 355, 368, 440, 460, 506, 520, 568, 572, 598, 710, 715, 781, 880, 920, 923, 1012, 1040, 1136, 1144, 1196, 1265, 1420, 1430, 1495, 1562, 1633, 1840, 1846, 2024, 2288, 2392, 2530, 2840, 2860, 2990, 3124, 3266, 3289, 3692, 3905, 4048, 4615, 4784, 5060, 5680, 5720, 5980, 6248, 6532, 6578, 7384, 7810, 8165, 9230, 10120, 10153, 11440, 11960, 12496, 13064, 13156, 14768, 15620, 16330, 16445, 17963, 18460, 20240, 20306, 21229, 23920, 26128, 26312, 31240, 32660, 32890, 35926, 36920, 40612, 42458, 50765, 52624, 62480, 65320, 65780, 71852, 73840, 81224, 84916, 89815, 101530, 106145, 130640, 131560, 143704, 162448, 169832, 179630, 203060, 212290, 233519, 263120, 287408, 339664, 359260, 406120, 424580, 467038, 718520, 812240, 849160, 934076, 1167595, 1437040, 1698320, 1868152, 2335190, 3736304, 4670380, 9340760, 18681520]

約数ペア:

[(1, 18681520), (2, 9340760), (4, 4670380), (5, 3736304), (8, 2335190), (10, 1868152), (11, 1698320), (13, 1437040), (16, 1167595), (20, 934076), (22, 849160), (23, 812240), (26, 718520), (40, 467038), (44, 424580), (46, 406120), (52, 359260), (55, 339664), (65, 287408), (71, 263120), (80, 233519), (88, 212290), (92, 203060), (104, 179630), (110, 169832), (115, 162448), (130, 143704), (142, 131560), (143, 130640), (176, 106145), (184, 101530), (208, 89815), (220, 84916), (230, 81224), (253, 73840), (260, 71852), (284, 65780), (286, 65320), (299, 62480), (355, 52624), (368, 50765), (440, 42458), (460, 40612), (506, 36920), (520, 35926), (568, 32890), (572, 32660), (598, 31240), (710, 26312), (715, 26128), (781, 23920), (880, 21229), (920, 20306), (923, 20240), (1012, 18460), (1040, 17963), (1136, 16445), (1144, 16330), (1196, 15620), (1265, 14768), (1420, 13156), (1430, 13064), (1495, 12496), (1562, 11960), (1633, 11440), (1840, 10153), (1846, 10120), (2024, 9230), (2288, 8165), (2392, 7810), (2530, 7384), (2840, 6578), (2860, 6532), (2990, 6248), (3124, 5980), (3266, 5720), (3289, 5680), (3692, 5060), (3905, 4784), (4048, 4615)]