18355920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:453

約数の個数: 160

約数和(自身を含む): 65888640

約数和(自身を除く): 47532720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 33, 34, 40, 44, 48, 51, 55, 60, 66, 68, 80, 85, 88, 102, 110, 120, 132, 136, 165, 170, 176, 187, 204, 220, 240, 255, 264, 272, 330, 340, 374, 408, 409, 440, 510, 528, 561, 660, 680, 748, 816, 818, 880, 935, 1020, 1122, 1227, 1320, 1360, 1496, 1636, 1870, 2040, 2045, 2244, 2454, 2640, 2805, 2992, 3272, 3740, 4080, 4090, 4488, 4499, 4908, 5610, 6135, 6544, 6953, 7480, 8180, 8976, 8998, 9816, 11220, 12270, 13497, 13906, 14960, 16360, 17996, 19632, 20859, 22440, 22495, 24540, 26994, 27812, 32720, 34765, 35992, 41718, 44880, 44990, 49080, 53988, 55624, 67485, 69530, 71984, 76483, 83436, 89980, 98160, 104295, 107976, 111248, 134970, 139060, 152966, 166872, 179960, 208590, 215952, 229449, 269940, 278120, 305932, 333744, 359920, 382415, 417180, 458898, 539880, 556240, 611864, 764830, 834360, 917796, 1079760, 1147245, 1223728, 1529660, 1668720, 1835592, 2294490, 3059320, 3671184, 4588980, 6118640, 9177960, 18355920]

約数ペア:

[(1, 18355920), (2, 9177960), (3, 6118640), (4, 4588980), (5, 3671184), (6, 3059320), (8, 2294490), (10, 1835592), (11, 1668720), (12, 1529660), (15, 1223728), (16, 1147245), (17, 1079760), (20, 917796), (22, 834360), (24, 764830), (30, 611864), (33, 556240), (34, 539880), (40, 458898), (44, 417180), (48, 382415), (51, 359920), (55, 333744), (60, 305932), (66, 278120), (68, 269940), (80, 229449), (85, 215952), (88, 208590), (102, 179960), (110, 166872), (120, 152966), (132, 139060), (136, 134970), (165, 111248), (170, 107976), (176, 104295), (187, 98160), (204, 89980), (220, 83436), (240, 76483), (255, 71984), (264, 69530), (272, 67485), (330, 55624), (340, 53988), (374, 49080), (408, 44990), (409, 44880), (440, 41718), (510, 35992), (528, 34765), (561, 32720), (660, 27812), (680, 26994), (748, 24540), (816, 22495), (818, 22440), (880, 20859), (935, 19632), (1020, 17996), (1122, 16360), (1227, 14960), (1320, 13906), (1360, 13497), (1496, 12270), (1636, 11220), (1870, 9816), (2040, 8998), (2045, 8976), (2244, 8180), (2454, 7480), (2640, 6953), (2805, 6544), (2992, 6135), (3272, 5610), (3740, 4908), (4080, 4499), (4090, 4488)]