30887960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{12659}}^1$

素因数の和:12731

約数の個数: 32

約数和(自身を含む): 70642800

約数和(自身を除く): 39754840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 12659, 25318, 50636, 63295, 101272, 126590, 253180, 506360, 772199, 1544398, 3088796, 3860995, 6177592, 7721990, 15443980, 30887960]

約数ペア:

[(1, 30887960), (2, 15443980), (4, 7721990), (5, 6177592), (8, 3860995), (10, 3088796), (20, 1544398), (40, 772199), (61, 506360), (122, 253180), (244, 126590), (305, 101272), (488, 63295), (610, 50636), (1220, 25318), (2440, 12659)]