20196715

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 11978645

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 121, 133, 209, 251, 385, 605, 665, 847, 1045, 1255, 1463, 1757, 2299, 2761, 4235, 4769, 7315, 8785, 11495, 13805, 16093, 19327, 23845, 30371, 33383, 52459, 80465, 96635, 151855, 166915, 212597, 262295, 367213, 577049, 1062985, 1836065, 2885245, 4039343, 20196715]

約数ペア:

[(1, 20196715), (5, 4039343), (7, 2885245), (11, 1836065), (19, 1062985), (35, 577049), (55, 367213), (77, 262295), (95, 212597), (121, 166915), (133, 151855), (209, 96635), (251, 80465), (385, 52459), (605, 33383), (665, 30371), (847, 23845), (1045, 19327), (1255, 16093), (1463, 13805), (1757, 11495), (2299, 8785), (2761, 7315), (4235, 4769)]