21284648

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{317}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 50371200

約数和(自身を除く): 29086552

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 109, 154, 218, 308, 317, 436, 616, 634, 763, 872, 1199, 1268, 1526, 2219, 2398, 2536, 3052, 3487, 4438, 4796, 6104, 6974, 8393, 8876, 9592, 13948, 16786, 17752, 24409, 27896, 33572, 34553, 48818, 67144, 69106, 97636, 138212, 195272, 241871, 276424, 380083, 483742, 760166, 967484, 1520332, 1934968, 2660581, 3040664, 5321162, 10642324, 21284648]

約数ペア:

[(1, 21284648), (2, 10642324), (4, 5321162), (7, 3040664), (8, 2660581), (11, 1934968), (14, 1520332), (22, 967484), (28, 760166), (44, 483742), (56, 380083), (77, 276424), (88, 241871), (109, 195272), (154, 138212), (218, 97636), (308, 69106), (317, 67144), (436, 48818), (616, 34553), (634, 33572), (763, 27896), (872, 24409), (1199, 17752), (1268, 16786), (1526, 13948), (2219, 9592), (2398, 8876), (2536, 8393), (3052, 6974), (3487, 6104), (4438, 4796)]