18420220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:407

約数の個数: 96

約数和(自身を含む): 49392000

約数和(自身を除く): 30971780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 29, 35, 52, 58, 65, 70, 91, 116, 130, 140, 145, 182, 203, 260, 290, 349, 364, 377, 406, 455, 580, 698, 754, 812, 910, 1015, 1396, 1508, 1745, 1820, 1885, 2030, 2443, 2639, 3490, 3770, 4060, 4537, 4886, 5278, 6980, 7540, 9074, 9772, 10121, 10556, 12215, 13195, 18148, 20242, 22685, 24430, 26390, 31759, 40484, 45370, 48860, 50605, 52780, 63518, 70847, 90740, 101210, 127036, 131573, 141694, 158795, 202420, 263146, 283388, 317590, 354235, 526292, 635180, 657865, 708470, 921011, 1315730, 1416940, 1842022, 2631460, 3684044, 4605055, 9210110, 18420220]

約数ペア:

[(1, 18420220), (2, 9210110), (4, 4605055), (5, 3684044), (7, 2631460), (10, 1842022), (13, 1416940), (14, 1315730), (20, 921011), (26, 708470), (28, 657865), (29, 635180), (35, 526292), (52, 354235), (58, 317590), (65, 283388), (70, 263146), (91, 202420), (116, 158795), (130, 141694), (140, 131573), (145, 127036), (182, 101210), (203, 90740), (260, 70847), (290, 63518), (349, 52780), (364, 50605), (377, 48860), (406, 45370), (455, 40484), (580, 31759), (698, 26390), (754, 24430), (812, 22685), (910, 20242), (1015, 18148), (1396, 13195), (1508, 12215), (1745, 10556), (1820, 10121), (1885, 9772), (2030, 9074), (2443, 7540), (2639, 6980), (3490, 5278), (3770, 4886), (4060, 4537)]