221239876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20357}}^1$

素因数の和:20404

約数の個数: 48

約数和(自身を含む): 478820160

約数和(自身を除く): 257580284

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 143, 209, 247, 286, 418, 494, 572, 836, 988, 2717, 5434, 10868, 20357, 40714, 81428, 223927, 264641, 386783, 447854, 529282, 773566, 895708, 1058564, 1547132, 2911051, 4254613, 5028179, 5822102, 8509226, 10056358, 11644204, 17018452, 20112716, 55309969, 110619938, 221239876]

約数ペア:

[(1, 221239876), (2, 110619938), (4, 55309969), (11, 20112716), (13, 17018452), (19, 11644204), (22, 10056358), (26, 8509226), (38, 5822102), (44, 5028179), (52, 4254613), (76, 2911051), (143, 1547132), (209, 1058564), (247, 895708), (286, 773566), (418, 529282), (494, 447854), (572, 386783), (836, 264641), (988, 223927), (2717, 81428), (5434, 40714), (10868, 20357)]