21723156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:398

約数の個数: 144

約数和(自身を含む): 71344000

約数和(自身を除く): 49620844

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 19, 21, 26, 28, 36, 38, 39, 42, 52, 57, 63, 76, 78, 84, 91, 114, 117, 126, 133, 156, 171, 182, 228, 234, 247, 252, 266, 273, 342, 349, 364, 399, 468, 494, 532, 546, 684, 698, 741, 798, 819, 988, 1047, 1092, 1197, 1396, 1482, 1596, 1638, 1729, 2094, 2223, 2394, 2443, 2964, 3141, 3276, 3458, 4188, 4446, 4537, 4788, 4886, 5187, 6282, 6631, 6916, 7329, 8892, 9074, 9772, 10374, 12564, 13262, 13611, 14658, 15561, 18148, 19893, 20748, 21987, 26524, 27222, 29316, 31122, 31759, 39786, 40833, 43974, 46417, 54444, 59679, 62244, 63518, 79572, 81666, 86203, 87948, 92834, 95277, 119358, 127036, 139251, 163332, 172406, 185668, 190554, 238716, 258609, 278502, 285831, 344812, 381108, 417753, 517218, 557004, 571662, 603421, 775827, 835506, 1034436, 1143324, 1206842, 1551654, 1671012, 1810263, 2413684, 3103308, 3620526, 5430789, 7241052, 10861578, 21723156]

約数ペア:

[(1, 21723156), (2, 10861578), (3, 7241052), (4, 5430789), (6, 3620526), (7, 3103308), (9, 2413684), (12, 1810263), (13, 1671012), (14, 1551654), (18, 1206842), (19, 1143324), (21, 1034436), (26, 835506), (28, 775827), (36, 603421), (38, 571662), (39, 557004), (42, 517218), (52, 417753), (57, 381108), (63, 344812), (76, 285831), (78, 278502), (84, 258609), (91, 238716), (114, 190554), (117, 185668), (126, 172406), (133, 163332), (156, 139251), (171, 127036), (182, 119358), (228, 95277), (234, 92834), (247, 87948), (252, 86203), (266, 81666), (273, 79572), (342, 63518), (349, 62244), (364, 59679), (399, 54444), (468, 46417), (494, 43974), (532, 40833), (546, 39786), (684, 31759), (698, 31122), (741, 29316), (798, 27222), (819, 26524), (988, 21987), (1047, 20748), (1092, 19893), (1197, 18148), (1396, 15561), (1482, 14658), (1596, 13611), (1638, 13262), (1729, 12564), (2094, 10374), (2223, 9772), (2394, 9074), (2443, 8892), (2964, 7329), (3141, 6916), (3276, 6631), (3458, 6282), (4188, 5187), (4446, 4886), (4537, 4788)]