21889868

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1$

素因数の和:124

約数の個数: 108

約数和(自身を含む): 53491536

約数和(自身を除く): 31601668

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 71, 77, 91, 98, 121, 142, 143, 154, 182, 196, 242, 284, 286, 308, 364, 484, 497, 539, 572, 637, 781, 847, 923, 994, 1001, 1078, 1274, 1562, 1573, 1694, 1846, 1988, 2002, 2156, 2548, 3124, 3146, 3388, 3479, 3692, 4004, 5467, 5929, 6292, 6461, 6958, 7007, 8591, 10153, 10934, 11011, 11858, 12922, 13916, 14014, 17182, 20306, 21868, 22022, 23716, 25844, 28028, 34364, 38269, 40612, 44044, 45227, 60137, 71071, 76538, 77077, 90454, 111683, 120274, 142142, 153076, 154154, 180908, 223366, 240548, 284284, 308308, 420959, 446732, 497497, 781781, 841918, 994994, 1563562, 1683836, 1989988, 3127124, 5472467, 10944934, 21889868]

約数ペア:

[(1, 21889868), (2, 10944934), (4, 5472467), (7, 3127124), (11, 1989988), (13, 1683836), (14, 1563562), (22, 994994), (26, 841918), (28, 781781), (44, 497497), (49, 446732), (52, 420959), (71, 308308), (77, 284284), (91, 240548), (98, 223366), (121, 180908), (142, 154154), (143, 153076), (154, 142142), (182, 120274), (196, 111683), (242, 90454), (284, 77077), (286, 76538), (308, 71071), (364, 60137), (484, 45227), (497, 44044), (539, 40612), (572, 38269), (637, 34364), (781, 28028), (847, 25844), (923, 23716), (994, 22022), (1001, 21868), (1078, 20306), (1274, 17182), (1562, 14014), (1573, 13916), (1694, 12922), (1846, 11858), (1988, 11011), (2002, 10934), (2156, 10153), (2548, 8591), (3124, 7007), (3146, 6958), (3388, 6461), (3479, 6292), (3692, 5929), (4004, 5467)]