28951980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{499}}^1\times {\mathrm{967}}^1$

素因数の和:1478

約数の個数: 48

約数和(自身を含む): 81312000

約数和(自身を除く): 52360020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 499, 967, 998, 1497, 1934, 1996, 2495, 2901, 2994, 3868, 4835, 4990, 5802, 5988, 7485, 9670, 9980, 11604, 14505, 14970, 19340, 29010, 29940, 58020, 482533, 965066, 1447599, 1930132, 2412665, 2895198, 4825330, 5790396, 7237995, 9650660, 14475990, 28951980]

約数ペア:

[(1, 28951980), (2, 14475990), (3, 9650660), (4, 7237995), (5, 5790396), (6, 4825330), (10, 2895198), (12, 2412665), (15, 1930132), (20, 1447599), (30, 965066), (60, 482533), (499, 58020), (967, 29940), (998, 29010), (1497, 19340), (1934, 14970), (1996, 14505), (2495, 11604), (2901, 9980), (2994, 9670), (3868, 7485), (4835, 5988), (4990, 5802)]