20235979280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{57923}}^1$

素因数の和:58344

約数の個数: 80

約数和(自身を含む): 51455974464

約数和(自身を除く): 31219995184

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 397, 440, 794, 880, 1588, 1985, 3176, 3970, 4367, 6352, 7940, 8734, 15880, 17468, 21835, 31760, 34936, 43670, 57923, 69872, 87340, 115846, 174680, 231692, 289615, 349360, 463384, 579230, 637153, 926768, 1158460, 1274306, 2316920, 2548612, 3185765, 4633840, 5097224, 6371530, 10194448, 12743060, 22995431, 25486120, 45990862, 50972240, 91981724, 114977155, 183963448, 229954310, 252949741, 367926896, 459908620, 505899482, 919817240, 1011798964, 1264748705, 1839634480, 2023597928, 2529497410, 4047195856, 5058994820, 10117989640, 20235979280]

約数ペア:

[(1, 20235979280), (2, 10117989640), (4, 5058994820), (5, 4047195856), (8, 2529497410), (10, 2023597928), (11, 1839634480), (16, 1264748705), (20, 1011798964), (22, 919817240), (40, 505899482), (44, 459908620), (55, 367926896), (80, 252949741), (88, 229954310), (110, 183963448), (176, 114977155), (220, 91981724), (397, 50972240), (440, 45990862), (794, 25486120), (880, 22995431), (1588, 12743060), (1985, 10194448), (3176, 6371530), (3970, 5097224), (4367, 4633840), (6352, 3185765), (7940, 2548612), (8734, 2316920), (15880, 1274306), (17468, 1158460), (21835, 926768), (31760, 637153), (34936, 579230), (43670, 463384), (57923, 349360), (69872, 289615), (87340, 231692), (115846, 174680)]