640832

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:79

約数の個数: 56

約数和(自身を含む): 1463040

約数和(自身を除く): 822208

約数列:

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

約数ペア:

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