20295920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{4159}}^1$

素因数の和:4233

約数の個数: 40

約数和(自身を含む): 47973120

約数和(自身を除く): 27677200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4159, 4880, 8318, 16636, 20795, 33272, 41590, 66544, 83180, 166360, 253699, 332720, 507398, 1014796, 1268495, 2029592, 2536990, 4059184, 5073980, 10147960, 20295920]

約数ペア:

[(1, 20295920), (2, 10147960), (4, 5073980), (5, 4059184), (8, 2536990), (10, 2029592), (16, 1268495), (20, 1014796), (40, 507398), (61, 332720), (80, 253699), (122, 166360), (244, 83180), (305, 66544), (488, 41590), (610, 33272), (976, 20795), (1220, 16636), (2440, 8318), (4159, 4880)]