21050612

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 44330496

約数和(自身を除く): 23279884

約数列:

[1, 2, 4, 11, 22, 23, 31, 44, 46, 61, 62, 92, 121, 122, 124, 242, 244, 253, 341, 484, 506, 671, 682, 713, 1012, 1342, 1364, 1403, 1426, 1891, 2684, 2783, 2806, 2852, 3751, 3782, 5566, 5612, 7381, 7502, 7564, 7843, 11132, 14762, 15004, 15433, 15686, 20801, 29524, 30866, 31372, 41602, 43493, 61732, 83204, 86273, 86986, 169763, 172546, 173972, 228811, 339526, 345092, 457622, 478423, 679052, 915244, 956846, 1913692, 5262653, 10525306, 21050612]

約数ペア:

[(1, 21050612), (2, 10525306), (4, 5262653), (11, 1913692), (22, 956846), (23, 915244), (31, 679052), (44, 478423), (46, 457622), (61, 345092), (62, 339526), (92, 228811), (121, 173972), (122, 172546), (124, 169763), (242, 86986), (244, 86273), (253, 83204), (341, 61732), (484, 43493), (506, 41602), (671, 31372), (682, 30866), (713, 29524), (1012, 20801), (1342, 15686), (1364, 15433), (1403, 15004), (1426, 14762), (1891, 11132), (2684, 7843), (2783, 7564), (2806, 7502), (2852, 7381), (3751, 5612), (3782, 5566)]