68448440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 159213600

約数和(自身を除く): 90765160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 83, 106, 166, 212, 265, 332, 389, 415, 424, 530, 664, 778, 830, 1060, 1556, 1660, 1945, 2120, 3112, 3320, 3890, 4399, 7780, 8798, 15560, 17596, 20617, 21995, 32287, 35192, 41234, 43990, 64574, 82468, 87980, 103085, 129148, 161435, 164936, 175960, 206170, 258296, 322870, 412340, 645740, 824680, 1291480, 1711211, 3422422, 6844844, 8556055, 13689688, 17112110, 34224220, 68448440]

約数ペア:

[(1, 68448440), (2, 34224220), (4, 17112110), (5, 13689688), (8, 8556055), (10, 6844844), (20, 3422422), (40, 1711211), (53, 1291480), (83, 824680), (106, 645740), (166, 412340), (212, 322870), (265, 258296), (332, 206170), (389, 175960), (415, 164936), (424, 161435), (530, 129148), (664, 103085), (778, 87980), (830, 82468), (1060, 64574), (1556, 43990), (1660, 41234), (1945, 35192), (2120, 32287), (3112, 21995), (3320, 20617), (3890, 17596), (4399, 15560), (7780, 8798)]