20305131

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 34831104

約数和(自身を除く): 14525973

約数列:

[1, 3, 7, 11, 21, 33, 61, 77, 121, 131, 183, 231, 363, 393, 427, 671, 847, 917, 1281, 1441, 2013, 2541, 2751, 4323, 4697, 7381, 7991, 10087, 14091, 15851, 22143, 23973, 30261, 47553, 51667, 55937, 87901, 110957, 155001, 167811, 263703, 332871, 615307, 966911, 1845921, 2900733, 6768377, 20305131]

約数ペア:

[(1, 20305131), (3, 6768377), (7, 2900733), (11, 1845921), (21, 966911), (33, 615307), (61, 332871), (77, 263703), (121, 167811), (131, 155001), (183, 110957), (231, 87901), (363, 55937), (393, 51667), (427, 47553), (671, 30261), (847, 23973), (917, 22143), (1281, 15851), (1441, 14091), (2013, 10087), (2541, 7991), (2751, 7381), (4323, 4697)]