19781496

素因数分解:

$2^3\times 3^4\times 7^3\times {\mathrm{89}}^1$

素因数の和:128

約数の個数: 160

約数和(自身を含む): 65340000

約数和(自身を除く): 45558504

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 49, 54, 56, 63, 72, 81, 84, 89, 98, 108, 126, 147, 162, 168, 178, 189, 196, 216, 252, 267, 294, 324, 343, 356, 378, 392, 441, 504, 534, 567, 588, 623, 648, 686, 712, 756, 801, 882, 1029, 1068, 1134, 1176, 1246, 1323, 1372, 1512, 1602, 1764, 1869, 2058, 2136, 2268, 2403, 2492, 2646, 2744, 3087, 3204, 3528, 3738, 3969, 4116, 4361, 4536, 4806, 4984, 5292, 5607, 6174, 6408, 7209, 7476, 7938, 8232, 8722, 9261, 9612, 10584, 11214, 12348, 13083, 14418, 14952, 15876, 16821, 17444, 18522, 19224, 22428, 24696, 26166, 27783, 28836, 30527, 31752, 33642, 34888, 37044, 39249, 44856, 50463, 52332, 55566, 57672, 61054, 67284, 74088, 78498, 91581, 100926, 104664, 111132, 117747, 122108, 134568, 156996, 183162, 201852, 222264, 235494, 244216, 274743, 313992, 353241, 366324, 403704, 470988, 549486, 706482, 732648, 824229, 941976, 1098972, 1412964, 1648458, 2197944, 2472687, 2825928, 3296916, 4945374, 6593832, 9890748, 19781496]

約数ペア:

[(1, 19781496), (2, 9890748), (3, 6593832), (4, 4945374), (6, 3296916), (7, 2825928), (8, 2472687), (9, 2197944), (12, 1648458), (14, 1412964), (18, 1098972), (21, 941976), (24, 824229), (27, 732648), (28, 706482), (36, 549486), (42, 470988), (49, 403704), (54, 366324), (56, 353241), (63, 313992), (72, 274743), (81, 244216), (84, 235494), (89, 222264), (98, 201852), (108, 183162), (126, 156996), (147, 134568), (162, 122108), (168, 117747), (178, 111132), (189, 104664), (196, 100926), (216, 91581), (252, 78498), (267, 74088), (294, 67284), (324, 61054), (343, 57672), (356, 55566), (378, 52332), (392, 50463), (441, 44856), (504, 39249), (534, 37044), (567, 34888), (588, 33642), (623, 31752), (648, 30527), (686, 28836), (712, 27783), (756, 26166), (801, 24696), (882, 22428), (1029, 19224), (1068, 18522), (1134, 17444), (1176, 16821), (1246, 15876), (1323, 14952), (1372, 14418), (1512, 13083), (1602, 12348), (1764, 11214), (1869, 10584), (2058, 9612), (2136, 9261), (2268, 8722), (2403, 8232), (2492, 7938), (2646, 7476), (2744, 7209), (3087, 6408), (3204, 6174), (3528, 5607), (3738, 5292), (3969, 4984), (4116, 4806), (4361, 4536)]