18451420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 43164576

約数和(自身を除く): 24713156

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 103, 106, 130, 169, 206, 212, 260, 265, 338, 412, 515, 530, 676, 689, 845, 1030, 1060, 1339, 1378, 1690, 2060, 2678, 2756, 3380, 3445, 5356, 5459, 6695, 6890, 8957, 10918, 13390, 13780, 17407, 17914, 21836, 26780, 27295, 34814, 35828, 44785, 54590, 69628, 70967, 87035, 89570, 109180, 141934, 174070, 179140, 283868, 348140, 354835, 709670, 922571, 1419340, 1845142, 3690284, 4612855, 9225710, 18451420]

約数ペア:

[(1, 18451420), (2, 9225710), (4, 4612855), (5, 3690284), (10, 1845142), (13, 1419340), (20, 922571), (26, 709670), (52, 354835), (53, 348140), (65, 283868), (103, 179140), (106, 174070), (130, 141934), (169, 109180), (206, 89570), (212, 87035), (260, 70967), (265, 69628), (338, 54590), (412, 44785), (515, 35828), (530, 34814), (676, 27295), (689, 26780), (845, 21836), (1030, 17914), (1060, 17407), (1339, 13780), (1378, 13390), (1690, 10918), (2060, 8957), (2678, 6890), (2756, 6695), (3380, 5459), (3445, 5356)]