21045201612

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{347}}^1\times {\mathrm{1409}}^1$

素因数の和:1991

約数の個数: 96

約数和(自身を含む): 52428176640

約数和(自身を除く): 31382975028

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 211, 347, 422, 633, 694, 844, 1041, 1266, 1388, 1409, 2082, 2532, 2818, 3587, 4164, 4227, 5636, 5899, 7174, 8454, 10761, 11798, 14348, 16908, 17697, 21522, 23596, 23953, 35394, 43044, 47906, 70788, 71859, 73217, 95812, 143718, 146434, 219651, 287436, 292868, 297299, 439302, 488923, 594598, 878604, 891897, 977846, 1189196, 1244689, 1466769, 1783794, 1955692, 2489378, 2933538, 3567588, 3734067, 4978756, 5054083, 5867076, 7468134, 8311691, 10108166, 14936268, 15162249, 16623382, 20216332, 24935073, 30324498, 33246764, 49870146, 60648996, 99740292, 103162753, 206325506, 309488259, 412651012, 618976518, 1237953036, 1753766801, 3507533602, 5261300403, 7015067204, 10522600806, 21045201612]

約数ペア:

[(1, 21045201612), (2, 10522600806), (3, 7015067204), (4, 5261300403), (6, 3507533602), (12, 1753766801), (17, 1237953036), (34, 618976518), (51, 412651012), (68, 309488259), (102, 206325506), (204, 103162753), (211, 99740292), (347, 60648996), (422, 49870146), (633, 33246764), (694, 30324498), (844, 24935073), (1041, 20216332), (1266, 16623382), (1388, 15162249), (1409, 14936268), (2082, 10108166), (2532, 8311691), (2818, 7468134), (3587, 5867076), (4164, 5054083), (4227, 4978756), (5636, 3734067), (5899, 3567588), (7174, 2933538), (8454, 2489378), (10761, 1955692), (11798, 1783794), (14348, 1466769), (16908, 1244689), (17697, 1189196), (21522, 977846), (23596, 891897), (23953, 878604), (35394, 594598), (43044, 488923), (47906, 439302), (70788, 297299), (71859, 292868), (73217, 287436), (95812, 219651), (143718, 146434)]