19207020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 144

約数和(自身を含む): 64350720

約数和(自身を除く): 45143700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 49, 60, 70, 84, 94, 98, 105, 139, 140, 141, 147, 188, 196, 210, 235, 245, 278, 282, 294, 329, 417, 420, 470, 490, 556, 564, 588, 658, 695, 705, 735, 834, 940, 973, 980, 987, 1316, 1390, 1410, 1470, 1645, 1668, 1946, 1974, 2085, 2303, 2780, 2820, 2919, 2940, 3290, 3892, 3948, 4170, 4606, 4865, 4935, 5838, 6533, 6580, 6811, 6909, 8340, 9212, 9730, 9870, 11515, 11676, 13066, 13622, 13818, 14595, 19460, 19599, 19740, 20433, 23030, 26132, 27244, 27636, 29190, 32665, 34055, 34545, 39198, 40866, 45731, 46060, 58380, 65330, 68110, 69090, 78396, 81732, 91462, 97995, 102165, 130660, 136220, 137193, 138180, 182924, 195990, 204330, 228655, 274386, 320117, 391980, 408660, 457310, 548772, 640234, 685965, 914620, 960351, 1280468, 1371930, 1600585, 1920702, 2743860, 3201170, 3841404, 4801755, 6402340, 9603510, 19207020]

約数ペア:

[(1, 19207020), (2, 9603510), (3, 6402340), (4, 4801755), (5, 3841404), (6, 3201170), (7, 2743860), (10, 1920702), (12, 1600585), (14, 1371930), (15, 1280468), (20, 960351), (21, 914620), (28, 685965), (30, 640234), (35, 548772), (42, 457310), (47, 408660), (49, 391980), (60, 320117), (70, 274386), (84, 228655), (94, 204330), (98, 195990), (105, 182924), (139, 138180), (140, 137193), (141, 136220), (147, 130660), (188, 102165), (196, 97995), (210, 91462), (235, 81732), (245, 78396), (278, 69090), (282, 68110), (294, 65330), (329, 58380), (417, 46060), (420, 45731), (470, 40866), (490, 39198), (556, 34545), (564, 34055), (588, 32665), (658, 29190), (695, 27636), (705, 27244), (735, 26132), (834, 23030), (940, 20433), (973, 19740), (980, 19599), (987, 19460), (1316, 14595), (1390, 13818), (1410, 13622), (1470, 13066), (1645, 11676), (1668, 11515), (1946, 9870), (1974, 9730), (2085, 9212), (2303, 8340), (2780, 6909), (2820, 6811), (2919, 6580), (2940, 6533), (3290, 5838), (3892, 4935), (3948, 4865), (4170, 4606)]