21689892

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:178

約数の個数: 144

約数和(自身を含む): 68245632

約数和(自身を除く): 46555740

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 61, 63, 68, 83, 84, 102, 119, 122, 126, 153, 166, 183, 204, 238, 244, 249, 252, 306, 332, 357, 366, 427, 476, 498, 549, 581, 612, 714, 732, 747, 854, 996, 1037, 1071, 1098, 1162, 1281, 1411, 1428, 1494, 1708, 1743, 2074, 2142, 2196, 2324, 2562, 2822, 2988, 3111, 3486, 3843, 4148, 4233, 4284, 5063, 5124, 5229, 5644, 6222, 6972, 7259, 7686, 8466, 9333, 9877, 10126, 10458, 12444, 12699, 14518, 15189, 15372, 16932, 18666, 19754, 20252, 20916, 21777, 25398, 29036, 29631, 30378, 35441, 37332, 39508, 43554, 45567, 50796, 59262, 60756, 65331, 70882, 86071, 87108, 88893, 91134, 106323, 118524, 130662, 141764, 172142, 177786, 182268, 212646, 258213, 261324, 318969, 344284, 355572, 425292, 516426, 602497, 637938, 774639, 1032852, 1204994, 1275876, 1549278, 1807491, 2409988, 3098556, 3614982, 5422473, 7229964, 10844946, 21689892]

約数ペア:

[(1, 21689892), (2, 10844946), (3, 7229964), (4, 5422473), (6, 3614982), (7, 3098556), (9, 2409988), (12, 1807491), (14, 1549278), (17, 1275876), (18, 1204994), (21, 1032852), (28, 774639), (34, 637938), (36, 602497), (42, 516426), (51, 425292), (61, 355572), (63, 344284), (68, 318969), (83, 261324), (84, 258213), (102, 212646), (119, 182268), (122, 177786), (126, 172142), (153, 141764), (166, 130662), (183, 118524), (204, 106323), (238, 91134), (244, 88893), (249, 87108), (252, 86071), (306, 70882), (332, 65331), (357, 60756), (366, 59262), (427, 50796), (476, 45567), (498, 43554), (549, 39508), (581, 37332), (612, 35441), (714, 30378), (732, 29631), (747, 29036), (854, 25398), (996, 21777), (1037, 20916), (1071, 20252), (1098, 19754), (1162, 18666), (1281, 16932), (1411, 15372), (1428, 15189), (1494, 14518), (1708, 12699), (1743, 12444), (2074, 10458), (2142, 10126), (2196, 9877), (2324, 9333), (2562, 8466), (2822, 7686), (2988, 7259), (3111, 6972), (3486, 6222), (3843, 5644), (4148, 5229), (4233, 5124), (4284, 5063)]