19690580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:409

約数の個数: 96

約数和(自身を含む): 52684800

約数和(自身を除く): 32994220

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 349, 364, 403, 434, 455, 620, 698, 806, 868, 910, 1085, 1396, 1612, 1745, 1820, 2015, 2170, 2443, 2821, 3490, 4030, 4340, 4537, 4886, 5642, 6980, 8060, 9074, 9772, 10819, 11284, 12215, 14105, 18148, 21638, 22685, 24430, 28210, 31759, 43276, 45370, 48860, 54095, 56420, 63518, 75733, 90740, 108190, 127036, 140647, 151466, 158795, 216380, 281294, 302932, 317590, 378665, 562588, 635180, 703235, 757330, 984529, 1406470, 1514660, 1969058, 2812940, 3938116, 4922645, 9845290, 19690580]

約数ペア:

[(1, 19690580), (2, 9845290), (4, 4922645), (5, 3938116), (7, 2812940), (10, 1969058), (13, 1514660), (14, 1406470), (20, 984529), (26, 757330), (28, 703235), (31, 635180), (35, 562588), (52, 378665), (62, 317590), (65, 302932), (70, 281294), (91, 216380), (124, 158795), (130, 151466), (140, 140647), (155, 127036), (182, 108190), (217, 90740), (260, 75733), (310, 63518), (349, 56420), (364, 54095), (403, 48860), (434, 45370), (455, 43276), (620, 31759), (698, 28210), (806, 24430), (868, 22685), (910, 21638), (1085, 18148), (1396, 14105), (1612, 12215), (1745, 11284), (1820, 10819), (2015, 9772), (2170, 9074), (2443, 8060), (2821, 6980), (3490, 5642), (4030, 4886), (4340, 4537)]