21957684

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{349}}^1$

素因数の和:477

約数の個数: 72

約数和(自身を含む): 60328800

約数和(自身を除く): 38371116

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 107, 147, 196, 214, 294, 321, 349, 428, 588, 642, 698, 749, 1047, 1284, 1396, 1498, 2094, 2247, 2443, 2996, 4188, 4494, 4886, 5243, 7329, 8988, 9772, 10486, 14658, 15729, 17101, 20972, 29316, 31458, 34202, 37343, 51303, 62916, 68404, 74686, 102606, 112029, 149372, 205212, 224058, 261401, 448116, 522802, 784203, 1045604, 1568406, 1829807, 3136812, 3659614, 5489421, 7319228, 10978842, 21957684]

約数ペア:

[(1, 21957684), (2, 10978842), (3, 7319228), (4, 5489421), (6, 3659614), (7, 3136812), (12, 1829807), (14, 1568406), (21, 1045604), (28, 784203), (42, 522802), (49, 448116), (84, 261401), (98, 224058), (107, 205212), (147, 149372), (196, 112029), (214, 102606), (294, 74686), (321, 68404), (349, 62916), (428, 51303), (588, 37343), (642, 34202), (698, 31458), (749, 29316), (1047, 20972), (1284, 17101), (1396, 15729), (1498, 14658), (2094, 10486), (2247, 9772), (2443, 8988), (2996, 7329), (4188, 5243), (4494, 4886)]