77824520

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 180662400

約数和(自身を除く): 102837880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 71, 134, 142, 268, 284, 335, 355, 409, 536, 568, 670, 710, 818, 1340, 1420, 1636, 2045, 2680, 2840, 3272, 4090, 4757, 8180, 9514, 16360, 19028, 23785, 27403, 29039, 38056, 47570, 54806, 58078, 95140, 109612, 116156, 137015, 145195, 190280, 219224, 232312, 274030, 290390, 548060, 580780, 1096120, 1161560, 1945613, 3891226, 7782452, 9728065, 15564904, 19456130, 38912260, 77824520]

約数ペア:

[(1, 77824520), (2, 38912260), (4, 19456130), (5, 15564904), (8, 9728065), (10, 7782452), (20, 3891226), (40, 1945613), (67, 1161560), (71, 1096120), (134, 580780), (142, 548060), (268, 290390), (284, 274030), (335, 232312), (355, 219224), (409, 190280), (536, 145195), (568, 137015), (670, 116156), (710, 109612), (818, 95140), (1340, 58078), (1420, 54806), (1636, 47570), (2045, 38056), (2680, 29039), (2840, 27403), (3272, 23785), (4090, 19028), (4757, 16360), (8180, 9514)]