220123280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211657}}^1$

素因数の和:211683

約数の個数: 40

約数和(自身を含む): 551157432

約数和(自身を除く): 331034152

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 211657, 423314, 846628, 1058285, 1693256, 2116570, 2751541, 3386512, 4233140, 5503082, 8466280, 11006164, 13757705, 16932560, 22012328, 27515410, 44024656, 55030820, 110061640, 220123280]

約数ペア:

[(1, 220123280), (2, 110061640), (4, 55030820), (5, 44024656), (8, 27515410), (10, 22012328), (13, 16932560), (16, 13757705), (20, 11006164), (26, 8466280), (40, 5503082), (52, 4233140), (65, 3386512), (80, 2751541), (104, 2116570), (130, 1693256), (208, 1058285), (260, 846628), (520, 423314), (1040, 211657)]