1281664

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 64

約数和(自身を含む): 2937600

約数和(自身を除く): 1655936

約数列:

[1, 2, 4, 8, 16, 17, 19, 31, 32, 34, 38, 62, 64, 68, 76, 124, 128, 136, 152, 248, 272, 304, 323, 496, 527, 544, 589, 608, 646, 992, 1054, 1088, 1178, 1216, 1292, 1984, 2108, 2176, 2356, 2432, 2584, 3968, 4216, 4712, 5168, 8432, 9424, 10013, 10336, 16864, 18848, 20026, 20672, 33728, 37696, 40052, 41344, 67456, 75392, 80104, 160208, 320416, 640832, 1281664]

約数ペア:

[(1, 1281664), (2, 640832), (4, 320416), (8, 160208), (16, 80104), (17, 75392), (19, 67456), (31, 41344), (32, 40052), (34, 37696), (38, 33728), (62, 20672), (64, 20026), (68, 18848), (76, 16864), (124, 10336), (128, 10013), (136, 9424), (152, 8432), (248, 5168), (272, 4712), (304, 4216), (323, 3968), (496, 2584), (527, 2432), (544, 2356), (589, 2176), (608, 2108), (646, 1984), (992, 1292), (1054, 1216), (1088, 1178)]