20557216

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:134

約数の個数: 96

約数和(自身を含む): 47029248

約数和(自身を除く): 26472032

約数列:

[1, 2, 4, 8, 16, 17, 23, 31, 32, 34, 46, 53, 62, 68, 92, 106, 124, 136, 184, 212, 248, 272, 368, 391, 424, 496, 527, 544, 713, 736, 782, 848, 901, 992, 1054, 1219, 1426, 1564, 1643, 1696, 1802, 2108, 2438, 2852, 3128, 3286, 3604, 4216, 4876, 5704, 6256, 6572, 7208, 8432, 9752, 11408, 12121, 12512, 13144, 14416, 16864, 19504, 20723, 22816, 24242, 26288, 27931, 28832, 37789, 39008, 41446, 48484, 52576, 55862, 75578, 82892, 96968, 111724, 151156, 165784, 193936, 223448, 302312, 331568, 387872, 446896, 604624, 642413, 663136, 893792, 1209248, 1284826, 2569652, 5139304, 10278608, 20557216]

約数ペア:

[(1, 20557216), (2, 10278608), (4, 5139304), (8, 2569652), (16, 1284826), (17, 1209248), (23, 893792), (31, 663136), (32, 642413), (34, 604624), (46, 446896), (53, 387872), (62, 331568), (68, 302312), (92, 223448), (106, 193936), (124, 165784), (136, 151156), (184, 111724), (212, 96968), (248, 82892), (272, 75578), (368, 55862), (391, 52576), (424, 48484), (496, 41446), (527, 39008), (544, 37789), (713, 28832), (736, 27931), (782, 26288), (848, 24242), (901, 22816), (992, 20723), (1054, 19504), (1219, 16864), (1426, 14416), (1564, 13144), (1643, 12512), (1696, 12121), (1802, 11408), (2108, 9752), (2438, 8432), (2852, 7208), (3128, 6572), (3286, 6256), (3604, 5704), (4216, 4876)]