21540160

素因数分解:

$2^6\times 5^1\times {\mathrm{83}}^1\times {\mathrm{811}}^1$

素因数の和:911

約数の個数: 56

約数和(自身を含む): 51974496

約数和(自身を除く): 30434336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 160, 166, 320, 332, 415, 664, 811, 830, 1328, 1622, 1660, 2656, 3244, 3320, 4055, 5312, 6488, 6640, 8110, 12976, 13280, 16220, 25952, 26560, 32440, 51904, 64880, 67313, 129760, 134626, 259520, 269252, 336565, 538504, 673130, 1077008, 1346260, 2154016, 2692520, 4308032, 5385040, 10770080, 21540160]

約数ペア:

[(1, 21540160), (2, 10770080), (4, 5385040), (5, 4308032), (8, 2692520), (10, 2154016), (16, 1346260), (20, 1077008), (32, 673130), (40, 538504), (64, 336565), (80, 269252), (83, 259520), (160, 134626), (166, 129760), (320, 67313), (332, 64880), (415, 51904), (664, 32440), (811, 26560), (830, 25952), (1328, 16220), (1622, 13280), (1660, 12976), (2656, 8110), (3244, 6640), (3320, 6488), (4055, 5312)]