20706140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1$

素因数の和:427

約数の個数: 96

約数和(自身を含む): 55394304

約数和(自身を除く): 34688164

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, 364, 367, 403, 434, 455, 620, 734, 806, 868, 910, 1085, 1468, 1612, 1820, 1835, 2015, 2170, 2569, 2821, 3670, 4030, 4340, 4771, 5138, 5642, 7340, 8060, 9542, 10276, 11284, 11377, 12845, 14105, 19084, 22754, 23855, 25690, 28210, 33397, 45508, 47710, 51380, 56420, 56885, 66794, 79639, 95420, 113770, 133588, 147901, 159278, 166985, 227540, 295802, 318556, 333970, 398195, 591604, 667940, 739505, 796390, 1035307, 1479010, 1592780, 2070614, 2958020, 4141228, 5176535, 10353070, 20706140]

約数ペア:

[(1, 20706140), (2, 10353070), (4, 5176535), (5, 4141228), (7, 2958020), (10, 2070614), (13, 1592780), (14, 1479010), (20, 1035307), (26, 796390), (28, 739505), (31, 667940), (35, 591604), (52, 398195), (62, 333970), (65, 318556), (70, 295802), (91, 227540), (124, 166985), (130, 159278), (140, 147901), (155, 133588), (182, 113770), (217, 95420), (260, 79639), (310, 66794), (364, 56885), (367, 56420), (403, 51380), (434, 47710), (455, 45508), (620, 33397), (734, 28210), (806, 25690), (868, 23855), (910, 22754), (1085, 19084), (1468, 14105), (1612, 12845), (1820, 11377), (1835, 11284), (2015, 10276), (2170, 9542), (2569, 8060), (2821, 7340), (3670, 5642), (4030, 5138), (4340, 4771)]