21217196

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{757}}^1$

素因数の和:799

約数の個数: 72

約数和(自身を含む): 50810256

約数和(自身を除く): 29593060

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 143, 154, 182, 196, 286, 308, 364, 539, 572, 637, 757, 1001, 1078, 1274, 1514, 2002, 2156, 2548, 3028, 4004, 5299, 7007, 8327, 9841, 10598, 14014, 16654, 19682, 21196, 28028, 33308, 37093, 39364, 58289, 68887, 74186, 108251, 116578, 137774, 148372, 216502, 233156, 275548, 408023, 433004, 482209, 757757, 816046, 964418, 1515514, 1632092, 1928836, 3031028, 5304299, 10608598, 21217196]

約数ペア:

[(1, 21217196), (2, 10608598), (4, 5304299), (7, 3031028), (11, 1928836), (13, 1632092), (14, 1515514), (22, 964418), (26, 816046), (28, 757757), (44, 482209), (49, 433004), (52, 408023), (77, 275548), (91, 233156), (98, 216502), (143, 148372), (154, 137774), (182, 116578), (196, 108251), (286, 74186), (308, 68887), (364, 58289), (539, 39364), (572, 37093), (637, 33308), (757, 28028), (1001, 21196), (1078, 19682), (1274, 16654), (1514, 14014), (2002, 10598), (2156, 9841), (2548, 8327), (3028, 7007), (4004, 5299)]