640884224

素因数分解:

$2^9\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2539}}^1$

素因数の和:2603

約数の個数: 80

約数和(自身を含む): 1403146800

約数和(自身を除く): 762262576

約数列:

[1, 2, 4, 8, 16, 17, 29, 32, 34, 58, 64, 68, 116, 128, 136, 232, 256, 272, 464, 493, 512, 544, 928, 986, 1088, 1856, 1972, 2176, 2539, 3712, 3944, 4352, 5078, 7424, 7888, 8704, 10156, 14848, 15776, 20312, 31552, 40624, 43163, 63104, 73631, 81248, 86326, 126208, 147262, 162496, 172652, 252416, 294524, 324992, 345304, 589048, 649984, 690608, 1178096, 1251727, 1299968, 1381216, 2356192, 2503454, 2762432, 4712384, 5006908, 5524864, 9424768, 10013816, 11049728, 18849536, 20027632, 22099456, 37699072, 40055264, 80110528, 160221056, 320442112, 640884224]

約数ペア:

[(1, 640884224), (2, 320442112), (4, 160221056), (8, 80110528), (16, 40055264), (17, 37699072), (29, 22099456), (32, 20027632), (34, 18849536), (58, 11049728), (64, 10013816), (68, 9424768), (116, 5524864), (128, 5006908), (136, 4712384), (232, 2762432), (256, 2503454), (272, 2356192), (464, 1381216), (493, 1299968), (512, 1251727), (544, 1178096), (928, 690608), (986, 649984), (1088, 589048), (1856, 345304), (1972, 324992), (2176, 294524), (2539, 252416), (3712, 172652), (3944, 162496), (4352, 147262), (5078, 126208), (7424, 86326), (7888, 81248), (8704, 73631), (10156, 63104), (14848, 43163), (15776, 40624), (20312, 31552)]