80908020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19543}}^1$

素因数の和:19581

約数の個数: 72

約数和(自身を含む): 256104576

約数和(自身を除く): 175196556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 19543, 39086, 58629, 78172, 97715, 117258, 175887, 195430, 234516, 293145, 351774, 390860, 449489, 586290, 703548, 879435, 898978, 1172580, 1348467, 1758870, 1797956, 2247445, 2696934, 3517740, 4045401, 4494890, 5393868, 6742335, 8090802, 8989780, 13484670, 16181604, 20227005, 26969340, 40454010, 80908020]

約数ペア:

[(1, 80908020), (2, 40454010), (3, 26969340), (4, 20227005), (5, 16181604), (6, 13484670), (9, 8989780), (10, 8090802), (12, 6742335), (15, 5393868), (18, 4494890), (20, 4045401), (23, 3517740), (30, 2696934), (36, 2247445), (45, 1797956), (46, 1758870), (60, 1348467), (69, 1172580), (90, 898978), (92, 879435), (115, 703548), (138, 586290), (180, 449489), (207, 390860), (230, 351774), (276, 293145), (345, 234516), (414, 195430), (460, 175887), (690, 117258), (828, 97715), (1035, 78172), (1380, 58629), (2070, 39086), (4140, 19543)]