181661240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{3407}}^1$

素因数の和:3492

約数の個数: 64

約数和(自身を含む): 431861760

約数和(自身を除く): 250200520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 620, 860, 1240, 1333, 1720, 2666, 3407, 5332, 6665, 6814, 10664, 13330, 13628, 17035, 26660, 27256, 34070, 53320, 68140, 105617, 136280, 146501, 211234, 293002, 422468, 528085, 586004, 732505, 844936, 1056170, 1172008, 1465010, 2112340, 2930020, 4224680, 4541531, 5860040, 9083062, 18166124, 22707655, 36332248, 45415310, 90830620, 181661240]

約数ペア:

[(1, 181661240), (2, 90830620), (4, 45415310), (5, 36332248), (8, 22707655), (10, 18166124), (20, 9083062), (31, 5860040), (40, 4541531), (43, 4224680), (62, 2930020), (86, 2112340), (124, 1465010), (155, 1172008), (172, 1056170), (215, 844936), (248, 732505), (310, 586004), (344, 528085), (430, 422468), (620, 293002), (860, 211234), (1240, 146501), (1333, 136280), (1720, 105617), (2666, 68140), (3407, 53320), (5332, 34070), (6665, 27256), (6814, 26660), (10664, 17035), (13330, 13628)]