289774420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{25919}}^1$

素因数の和:25984

約数の個数: 48

約数和(自身を含む): 670602240

約数和(自身を除く): 380827820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 11180, 25919, 51838, 103676, 129595, 259190, 336947, 518380, 673894, 1114517, 1347788, 1684735, 2229034, 3369470, 4458068, 5572585, 6738940, 11145170, 14488721, 22290340, 28977442, 57954884, 72443605, 144887210, 289774420]

約数ペア:

[(1, 289774420), (2, 144887210), (4, 72443605), (5, 57954884), (10, 28977442), (13, 22290340), (20, 14488721), (26, 11145170), (43, 6738940), (52, 5572585), (65, 4458068), (86, 3369470), (130, 2229034), (172, 1684735), (215, 1347788), (260, 1114517), (430, 673894), (559, 518380), (860, 336947), (1118, 259190), (2236, 129595), (2795, 103676), (5590, 51838), (11180, 25919)]