19956849664

素因数分解:

$2^{10}\times {\mathrm{31}}^1\times {\mathrm{628681}}^1$

素因数の和:628732

約数の個数: 44

約数和(自身を含む): 41181185728

約数和(自身を除く): 21224336064

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1024, 1984, 3968, 7936, 15872, 31744, 628681, 1257362, 2514724, 5029448, 10058896, 19489111, 20117792, 38978222, 40235584, 77956444, 80471168, 155912888, 160942336, 311825776, 321884672, 623651552, 643769344, 1247303104, 2494606208, 4989212416, 9978424832, 19956849664]

約数ペア:

[(1, 19956849664), (2, 9978424832), (4, 4989212416), (8, 2494606208), (16, 1247303104), (31, 643769344), (32, 623651552), (62, 321884672), (64, 311825776), (124, 160942336), (128, 155912888), (248, 80471168), (256, 77956444), (496, 40235584), (512, 38978222), (992, 20117792), (1024, 19489111), (1984, 10058896), (3968, 5029448), (7936, 2514724), (15872, 1257362), (31744, 628681)]