20441480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1307}}^1$

素因数の和:1358

約数の個数: 64

約数和(自身を含む): 50855040

約数和(自身を除く): 30413560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 920, 1307, 1564, 1955, 2614, 3128, 3910, 5228, 6535, 7820, 10456, 13070, 15640, 22219, 26140, 30061, 44438, 52280, 60122, 88876, 111095, 120244, 150305, 177752, 222190, 240488, 300610, 444380, 511037, 601220, 888760, 1022074, 1202440, 2044148, 2555185, 4088296, 5110370, 10220740, 20441480]

約数ペア:

[(1, 20441480), (2, 10220740), (4, 5110370), (5, 4088296), (8, 2555185), (10, 2044148), (17, 1202440), (20, 1022074), (23, 888760), (34, 601220), (40, 511037), (46, 444380), (68, 300610), (85, 240488), (92, 222190), (115, 177752), (136, 150305), (170, 120244), (184, 111095), (230, 88876), (340, 60122), (391, 52280), (460, 44438), (680, 30061), (782, 26140), (920, 22219), (1307, 15640), (1564, 13070), (1955, 10456), (2614, 7820), (3128, 6535), (3910, 5228)]