31887760

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2003}}^1$

素因数の和:2215

約数の個数: 40

約数和(自身を含む): 74548800

約数和(自身を除く): 42661040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 2003, 3184, 3980, 4006, 7960, 8012, 10015, 15920, 16024, 20030, 32048, 40060, 80120, 160240, 398597, 797194, 1594388, 1992985, 3188776, 3985970, 6377552, 7971940, 15943880, 31887760]

約数ペア:

[(1, 31887760), (2, 15943880), (4, 7971940), (5, 6377552), (8, 3985970), (10, 3188776), (16, 1992985), (20, 1594388), (40, 797194), (80, 398597), (199, 160240), (398, 80120), (796, 40060), (995, 32048), (1592, 20030), (1990, 16024), (2003, 15920), (3184, 10015), (3980, 8012), (4006, 7960)]