21290100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 68245632

約数和(自身を除く): 46955532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 53, 60, 65, 75, 78, 100, 103, 106, 130, 150, 156, 159, 195, 206, 212, 260, 265, 300, 309, 318, 325, 390, 412, 515, 530, 618, 636, 650, 689, 780, 795, 975, 1030, 1060, 1236, 1300, 1325, 1339, 1378, 1545, 1590, 1950, 2060, 2067, 2575, 2650, 2678, 2756, 3090, 3180, 3445, 3900, 3975, 4017, 4134, 5150, 5300, 5356, 5459, 6180, 6695, 6890, 7725, 7950, 8034, 8268, 10300, 10335, 10918, 13390, 13780, 15450, 15900, 16068, 16377, 17225, 20085, 20670, 21836, 26780, 27295, 30900, 32754, 33475, 34450, 40170, 41340, 51675, 54590, 65508, 66950, 68900, 70967, 80340, 81885, 100425, 103350, 109180, 133900, 136475, 141934, 163770, 200850, 206700, 212901, 272950, 283868, 327540, 354835, 401700, 409425, 425802, 545900, 709670, 818850, 851604, 1064505, 1419340, 1637700, 1774175, 2129010, 3548350, 4258020, 5322525, 7096700, 10645050, 21290100]

約数ペア:

[(1, 21290100), (2, 10645050), (3, 7096700), (4, 5322525), (5, 4258020), (6, 3548350), (10, 2129010), (12, 1774175), (13, 1637700), (15, 1419340), (20, 1064505), (25, 851604), (26, 818850), (30, 709670), (39, 545900), (50, 425802), (52, 409425), (53, 401700), (60, 354835), (65, 327540), (75, 283868), (78, 272950), (100, 212901), (103, 206700), (106, 200850), (130, 163770), (150, 141934), (156, 136475), (159, 133900), (195, 109180), (206, 103350), (212, 100425), (260, 81885), (265, 80340), (300, 70967), (309, 68900), (318, 66950), (325, 65508), (390, 54590), (412, 51675), (515, 41340), (530, 40170), (618, 34450), (636, 33475), (650, 32754), (689, 30900), (780, 27295), (795, 26780), (975, 21836), (1030, 20670), (1060, 20085), (1236, 17225), (1300, 16377), (1325, 16068), (1339, 15900), (1378, 15450), (1545, 13780), (1590, 13390), (1950, 10918), (2060, 10335), (2067, 10300), (2575, 8268), (2650, 8034), (2678, 7950), (2756, 7725), (3090, 6890), (3180, 6695), (3445, 6180), (3900, 5459), (3975, 5356), (4017, 5300), (4134, 5150)]