19054980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{71}}^2$

素因数の和:167

約数の個数: 144

約数和(自身を含む): 68718720

約数和(自身を除く): 49663740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 71, 84, 90, 105, 108, 126, 135, 140, 142, 180, 189, 210, 213, 252, 270, 284, 315, 355, 378, 420, 426, 497, 540, 630, 639, 710, 756, 852, 945, 994, 1065, 1260, 1278, 1420, 1491, 1890, 1917, 1988, 2130, 2485, 2556, 2982, 3195, 3780, 3834, 4260, 4473, 4970, 5041, 5964, 6390, 7455, 7668, 8946, 9585, 9940, 10082, 12780, 13419, 14910, 15123, 17892, 19170, 20164, 22365, 25205, 26838, 29820, 30246, 35287, 38340, 44730, 45369, 50410, 53676, 60492, 67095, 70574, 75615, 89460, 90738, 100820, 105861, 134190, 136107, 141148, 151230, 176435, 181476, 211722, 226845, 268380, 272214, 302460, 317583, 352870, 423444, 453690, 529305, 544428, 635166, 680535, 705740, 907380, 952749, 1058610, 1270332, 1361070, 1587915, 1905498, 2117220, 2722140, 3175830, 3810996, 4763745, 6351660, 9527490, 19054980]

約数ペア:

[(1, 19054980), (2, 9527490), (3, 6351660), (4, 4763745), (5, 3810996), (6, 3175830), (7, 2722140), (9, 2117220), (10, 1905498), (12, 1587915), (14, 1361070), (15, 1270332), (18, 1058610), (20, 952749), (21, 907380), (27, 705740), (28, 680535), (30, 635166), (35, 544428), (36, 529305), (42, 453690), (45, 423444), (54, 352870), (60, 317583), (63, 302460), (70, 272214), (71, 268380), (84, 226845), (90, 211722), (105, 181476), (108, 176435), (126, 151230), (135, 141148), (140, 136107), (142, 134190), (180, 105861), (189, 100820), (210, 90738), (213, 89460), (252, 75615), (270, 70574), (284, 67095), (315, 60492), (355, 53676), (378, 50410), (420, 45369), (426, 44730), (497, 38340), (540, 35287), (630, 30246), (639, 29820), (710, 26838), (756, 25205), (852, 22365), (945, 20164), (994, 19170), (1065, 17892), (1260, 15123), (1278, 14910), (1420, 13419), (1491, 12780), (1890, 10082), (1917, 9940), (1988, 9585), (2130, 8946), (2485, 7668), (2556, 7455), (2982, 6390), (3195, 5964), (3780, 5041), (3834, 4970), (4260, 4473)]