20571876

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 56642040

約数和(自身を除く): 36070164

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 113, 117, 156, 226, 234, 339, 389, 452, 468, 678, 778, 1017, 1167, 1356, 1469, 1556, 2034, 2334, 2938, 3501, 4068, 4407, 4668, 5057, 5876, 7002, 8814, 10114, 13221, 14004, 15171, 17628, 20228, 26442, 30342, 43957, 45513, 52884, 60684, 87914, 91026, 131871, 175828, 182052, 263742, 395613, 527484, 571441, 791226, 1142882, 1582452, 1714323, 2285764, 3428646, 5142969, 6857292, 10285938, 20571876]

約数ペア:

[(1, 20571876), (2, 10285938), (3, 6857292), (4, 5142969), (6, 3428646), (9, 2285764), (12, 1714323), (13, 1582452), (18, 1142882), (26, 791226), (36, 571441), (39, 527484), (52, 395613), (78, 263742), (113, 182052), (117, 175828), (156, 131871), (226, 91026), (234, 87914), (339, 60684), (389, 52884), (452, 45513), (468, 43957), (678, 30342), (778, 26442), (1017, 20228), (1167, 17628), (1356, 15171), (1469, 14004), (1556, 13221), (2034, 10114), (2334, 8814), (2938, 7002), (3501, 5876), (4068, 5057), (4407, 4668)]