20254780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:419

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 33935300

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, 359, 364, 403, 434, 455, 620, 718, 806, 868, 910, 1085, 1436, 1612, 1795, 1820, 2015, 2170, 2513, 2821, 3590, 4030, 4340, 4667, 5026, 5642, 7180, 8060, 9334, 10052, 11129, 11284, 12565, 14105, 18668, 22258, 23335, 25130, 28210, 32669, 44516, 46670, 50260, 55645, 56420, 65338, 77903, 93340, 111290, 130676, 144677, 155806, 163345, 222580, 289354, 311612, 326690, 389515, 578708, 653380, 723385, 779030, 1012739, 1446770, 1558060, 2025478, 2893540, 4050956, 5063695, 10127390, 20254780]

約数ペア:

[(1, 20254780), (2, 10127390), (4, 5063695), (5, 4050956), (7, 2893540), (10, 2025478), (13, 1558060), (14, 1446770), (20, 1012739), (26, 779030), (28, 723385), (31, 653380), (35, 578708), (52, 389515), (62, 326690), (65, 311612), (70, 289354), (91, 222580), (124, 163345), (130, 155806), (140, 144677), (155, 130676), (182, 111290), (217, 93340), (260, 77903), (310, 65338), (359, 56420), (364, 55645), (403, 50260), (434, 46670), (455, 44516), (620, 32669), (718, 28210), (806, 25130), (868, 23335), (910, 22258), (1085, 18668), (1436, 14105), (1612, 12565), (1795, 11284), (1820, 11129), (2015, 10052), (2170, 9334), (2513, 8060), (2821, 7180), (3590, 5642), (4030, 5026), (4340, 4667)]