20424560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{479}}^1$

素因数の和:546

約数の個数: 80

約数和(自身を含む): 52496640

約数和(自身を除く): 32072080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 41, 52, 65, 80, 82, 104, 130, 164, 205, 208, 260, 328, 410, 479, 520, 533, 656, 820, 958, 1040, 1066, 1640, 1916, 2132, 2395, 2665, 3280, 3832, 4264, 4790, 5330, 6227, 7664, 8528, 9580, 10660, 12454, 19160, 19639, 21320, 24908, 31135, 38320, 39278, 42640, 49816, 62270, 78556, 98195, 99632, 124540, 157112, 196390, 249080, 255307, 314224, 392780, 498160, 510614, 785560, 1021228, 1276535, 1571120, 2042456, 2553070, 4084912, 5106140, 10212280, 20424560]

約数ペア:

[(1, 20424560), (2, 10212280), (4, 5106140), (5, 4084912), (8, 2553070), (10, 2042456), (13, 1571120), (16, 1276535), (20, 1021228), (26, 785560), (40, 510614), (41, 498160), (52, 392780), (65, 314224), (80, 255307), (82, 249080), (104, 196390), (130, 157112), (164, 124540), (205, 99632), (208, 98195), (260, 78556), (328, 62270), (410, 49816), (479, 42640), (520, 39278), (533, 38320), (656, 31135), (820, 24908), (958, 21320), (1040, 19639), (1066, 19160), (1640, 12454), (1916, 10660), (2132, 9580), (2395, 8528), (2665, 7664), (3280, 6227), (3832, 5330), (4264, 4790)]