681717760

素因数分解:

$2^{12}\times 5^1\times {\mathrm{33287}}^1$

素因数の和:33316

約数の個数: 52

約数和(自身を含む): 1635972048

約数和(自身を除く): 954254288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 10240, 20480, 33287, 66574, 133148, 166435, 266296, 332870, 532592, 665740, 1065184, 1331480, 2130368, 2662960, 4260736, 5325920, 8521472, 10651840, 17042944, 21303680, 34085888, 42607360, 68171776, 85214720, 136343552, 170429440, 340858880, 681717760]

約数ペア:

[(1, 681717760), (2, 340858880), (4, 170429440), (5, 136343552), (8, 85214720), (10, 68171776), (16, 42607360), (20, 34085888), (32, 21303680), (40, 17042944), (64, 10651840), (80, 8521472), (128, 5325920), (160, 4260736), (256, 2662960), (320, 2130368), (512, 1331480), (640, 1065184), (1024, 665740), (1280, 532592), (2048, 332870), (2560, 266296), (4096, 166435), (5120, 133148), (10240, 66574), (20480, 33287)]