19888360

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 47393280

約数和(自身を除く): 27504920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 373, 430, 620, 746, 860, 1240, 1333, 1492, 1720, 1865, 2666, 2984, 3730, 5332, 6665, 7460, 10664, 11563, 13330, 14920, 16039, 23126, 26660, 32078, 46252, 53320, 57815, 64156, 80195, 92504, 115630, 128312, 160390, 231260, 320780, 462520, 497209, 641560, 994418, 1988836, 2486045, 3977672, 4972090, 9944180, 19888360]

約数ペア:

[(1, 19888360), (2, 9944180), (4, 4972090), (5, 3977672), (8, 2486045), (10, 1988836), (20, 994418), (31, 641560), (40, 497209), (43, 462520), (62, 320780), (86, 231260), (124, 160390), (155, 128312), (172, 115630), (215, 92504), (248, 80195), (310, 64156), (344, 57815), (373, 53320), (430, 46252), (620, 32078), (746, 26660), (860, 23126), (1240, 16039), (1333, 14920), (1492, 13330), (1720, 11563), (1865, 10664), (2666, 7460), (2984, 6665), (3730, 5332)]