21003984

素因数分解:

$2^4\times 3^2\times {\mathrm{145861}}^1$

素因数の和:145875

約数の個数: 30

約数和(自身を含む): 58782386

約数和(自身を除く): 37778402

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 145861, 291722, 437583, 583444, 875166, 1166888, 1312749, 1750332, 2333776, 2625498, 3500664, 5250996, 7001328, 10501992, 21003984]

約数ペア:

[(1, 21003984), (2, 10501992), (3, 7001328), (4, 5250996), (6, 3500664), (8, 2625498), (9, 2333776), (12, 1750332), (16, 1312749), (18, 1166888), (24, 875166), (36, 583444), (48, 437583), (72, 291722), (144, 145861)]