20848240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{631}}^1$

素因数の和:710

約数の個数: 80

約数和(自身を含む): 56424960

約数和(自身を除く): 35576720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 59, 70, 80, 112, 118, 140, 236, 280, 295, 413, 472, 560, 590, 631, 826, 944, 1180, 1262, 1652, 2065, 2360, 2524, 3155, 3304, 4130, 4417, 4720, 5048, 6310, 6608, 8260, 8834, 10096, 12620, 16520, 17668, 22085, 25240, 33040, 35336, 37229, 44170, 50480, 70672, 74458, 88340, 148916, 176680, 186145, 260603, 297832, 353360, 372290, 521206, 595664, 744580, 1042412, 1303015, 1489160, 2084824, 2606030, 2978320, 4169648, 5212060, 10424120, 20848240]

約数ペア:

[(1, 20848240), (2, 10424120), (4, 5212060), (5, 4169648), (7, 2978320), (8, 2606030), (10, 2084824), (14, 1489160), (16, 1303015), (20, 1042412), (28, 744580), (35, 595664), (40, 521206), (56, 372290), (59, 353360), (70, 297832), (80, 260603), (112, 186145), (118, 176680), (140, 148916), (236, 88340), (280, 74458), (295, 70672), (413, 50480), (472, 44170), (560, 37229), (590, 35336), (631, 33040), (826, 25240), (944, 22085), (1180, 17668), (1262, 16520), (1652, 12620), (2065, 10096), (2360, 8834), (2524, 8260), (3155, 6608), (3304, 6310), (4130, 5048), (4417, 4720)]