65431040

素因数分解:

$2^9\times 5^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:503

約数の個数: 80

約数和(自身を含む): 159833520

約数和(自身を除く): 94402480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 419, 488, 512, 610, 640, 838, 976, 1220, 1280, 1676, 1952, 2095, 2440, 2560, 3352, 3904, 4190, 4880, 6704, 7808, 8380, 9760, 13408, 15616, 16760, 19520, 25559, 26816, 31232, 33520, 39040, 51118, 53632, 67040, 78080, 102236, 107264, 127795, 134080, 156160, 204472, 214528, 255590, 268160, 408944, 511180, 536320, 817888, 1022360, 1072640, 1635776, 2044720, 3271552, 4089440, 6543104, 8178880, 13086208, 16357760, 32715520, 65431040]

約数ペア:

[(1, 65431040), (2, 32715520), (4, 16357760), (5, 13086208), (8, 8178880), (10, 6543104), (16, 4089440), (20, 3271552), (32, 2044720), (40, 1635776), (61, 1072640), (64, 1022360), (80, 817888), (122, 536320), (128, 511180), (160, 408944), (244, 268160), (256, 255590), (305, 214528), (320, 204472), (419, 156160), (488, 134080), (512, 127795), (610, 107264), (640, 102236), (838, 78080), (976, 67040), (1220, 53632), (1280, 51118), (1676, 39040), (1952, 33520), (2095, 31232), (2440, 26816), (2560, 25559), (3352, 19520), (3904, 16760), (4190, 15616), (4880, 13408), (6704, 9760), (7808, 8380)]