19427760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{223}}^1$

素因数の和:264

約数の個数: 180

約数和(自身を含む): 72037056

約数和(自身を除く): 52609296

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 121, 132, 144, 165, 176, 180, 198, 220, 223, 240, 242, 264, 330, 360, 363, 396, 440, 446, 484, 495, 528, 605, 660, 669, 720, 726, 792, 880, 892, 968, 990, 1089, 1115, 1210, 1320, 1338, 1452, 1584, 1784, 1815, 1936, 1980, 2007, 2178, 2230, 2420, 2453, 2640, 2676, 2904, 3345, 3568, 3630, 3960, 4014, 4356, 4460, 4840, 4906, 5352, 5445, 5808, 6690, 7260, 7359, 7920, 8028, 8712, 8920, 9680, 9812, 10035, 10704, 10890, 12265, 13380, 14520, 14718, 16056, 17424, 17840, 19624, 20070, 21780, 22077, 24530, 26760, 26983, 29040, 29436, 32112, 36795, 39248, 40140, 43560, 44154, 49060, 53520, 53966, 58872, 73590, 80280, 80949, 87120, 88308, 98120, 107932, 110385, 117744, 134915, 147180, 160560, 161898, 176616, 196240, 215864, 220770, 242847, 269830, 294360, 323796, 353232, 404745, 431728, 441540, 485694, 539660, 588720, 647592, 809490, 883080, 971388, 1079320, 1214235, 1295184, 1618980, 1766160, 1942776, 2158640, 2428470, 3237960, 3885552, 4856940, 6475920, 9713880, 19427760]

約数ペア:

[(1, 19427760), (2, 9713880), (3, 6475920), (4, 4856940), (5, 3885552), (6, 3237960), (8, 2428470), (9, 2158640), (10, 1942776), (11, 1766160), (12, 1618980), (15, 1295184), (16, 1214235), (18, 1079320), (20, 971388), (22, 883080), (24, 809490), (30, 647592), (33, 588720), (36, 539660), (40, 485694), (44, 441540), (45, 431728), (48, 404745), (55, 353232), (60, 323796), (66, 294360), (72, 269830), (80, 242847), (88, 220770), (90, 215864), (99, 196240), (110, 176616), (120, 161898), (121, 160560), (132, 147180), (144, 134915), (165, 117744), (176, 110385), (180, 107932), (198, 98120), (220, 88308), (223, 87120), (240, 80949), (242, 80280), (264, 73590), (330, 58872), (360, 53966), (363, 53520), (396, 49060), (440, 44154), (446, 43560), (484, 40140), (495, 39248), (528, 36795), (605, 32112), (660, 29436), (669, 29040), (720, 26983), (726, 26760), (792, 24530), (880, 22077), (892, 21780), (968, 20070), (990, 19624), (1089, 17840), (1115, 17424), (1210, 16056), (1320, 14718), (1338, 14520), (1452, 13380), (1584, 12265), (1784, 10890), (1815, 10704), (1936, 10035), (1980, 9812), (2007, 9680), (2178, 8920), (2230, 8712), (2420, 8028), (2453, 7920), (2640, 7359), (2676, 7260), (2904, 6690), (3345, 5808), (3568, 5445), (3630, 5352), (3960, 4906), (4014, 4840), (4356, 4460)]