18715788

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 60540480

約数和(自身を除く): 41824692

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 29, 36, 39, 42, 52, 58, 63, 78, 84, 87, 91, 116, 117, 126, 156, 174, 182, 197, 203, 234, 252, 261, 273, 348, 364, 377, 394, 406, 468, 522, 546, 591, 609, 754, 788, 812, 819, 1044, 1092, 1131, 1182, 1218, 1379, 1508, 1638, 1773, 1827, 2262, 2364, 2436, 2561, 2639, 2758, 3276, 3393, 3546, 3654, 4137, 4524, 5122, 5278, 5516, 5713, 6786, 7092, 7308, 7683, 7917, 8274, 10244, 10556, 11426, 12411, 13572, 15366, 15834, 16548, 17139, 17927, 22852, 23049, 23751, 24822, 30732, 31668, 34278, 35854, 39991, 46098, 47502, 49644, 51417, 53781, 68556, 71708, 74269, 79982, 92196, 95004, 102834, 107562, 119973, 148538, 159964, 161343, 205668, 215124, 222807, 239946, 297076, 322686, 359919, 445614, 479892, 519883, 645372, 668421, 719838, 891228, 1039766, 1336842, 1439676, 1559649, 2079532, 2673684, 3119298, 4678947, 6238596, 9357894, 18715788]

約数ペア:

[(1, 18715788), (2, 9357894), (3, 6238596), (4, 4678947), (6, 3119298), (7, 2673684), (9, 2079532), (12, 1559649), (13, 1439676), (14, 1336842), (18, 1039766), (21, 891228), (26, 719838), (28, 668421), (29, 645372), (36, 519883), (39, 479892), (42, 445614), (52, 359919), (58, 322686), (63, 297076), (78, 239946), (84, 222807), (87, 215124), (91, 205668), (116, 161343), (117, 159964), (126, 148538), (156, 119973), (174, 107562), (182, 102834), (197, 95004), (203, 92196), (234, 79982), (252, 74269), (261, 71708), (273, 68556), (348, 53781), (364, 51417), (377, 49644), (394, 47502), (406, 46098), (468, 39991), (522, 35854), (546, 34278), (591, 31668), (609, 30732), (754, 24822), (788, 23751), (812, 23049), (819, 22852), (1044, 17927), (1092, 17139), (1131, 16548), (1182, 15834), (1218, 15366), (1379, 13572), (1508, 12411), (1638, 11426), (1773, 10556), (1827, 10244), (2262, 8274), (2364, 7917), (2436, 7683), (2561, 7308), (2639, 7092), (2758, 6786), (3276, 5713), (3393, 5516), (3546, 5278), (3654, 5122), (4137, 4524)]