19661320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 54743040

約数和(自身を除く): 35081720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 43, 46, 56, 70, 71, 86, 92, 115, 140, 142, 161, 172, 184, 215, 230, 280, 284, 301, 322, 344, 355, 430, 460, 497, 568, 602, 644, 710, 805, 860, 920, 989, 994, 1204, 1288, 1420, 1505, 1610, 1633, 1720, 1978, 1988, 2408, 2485, 2840, 3010, 3053, 3220, 3266, 3956, 3976, 4945, 4970, 6020, 6106, 6440, 6532, 6923, 7912, 8165, 9890, 9940, 11431, 12040, 12212, 13064, 13846, 15265, 16330, 19780, 19880, 21371, 22862, 24424, 27692, 30530, 32660, 34615, 39560, 42742, 45724, 55384, 57155, 61060, 65320, 69230, 70219, 85484, 91448, 106855, 114310, 122120, 138460, 140438, 170968, 213710, 228620, 276920, 280876, 351095, 427420, 457240, 491533, 561752, 702190, 854840, 983066, 1404380, 1966132, 2457665, 2808760, 3932264, 4915330, 9830660, 19661320]

約数ペア:

[(1, 19661320), (2, 9830660), (4, 4915330), (5, 3932264), (7, 2808760), (8, 2457665), (10, 1966132), (14, 1404380), (20, 983066), (23, 854840), (28, 702190), (35, 561752), (40, 491533), (43, 457240), (46, 427420), (56, 351095), (70, 280876), (71, 276920), (86, 228620), (92, 213710), (115, 170968), (140, 140438), (142, 138460), (161, 122120), (172, 114310), (184, 106855), (215, 91448), (230, 85484), (280, 70219), (284, 69230), (301, 65320), (322, 61060), (344, 57155), (355, 55384), (430, 45724), (460, 42742), (497, 39560), (568, 34615), (602, 32660), (644, 30530), (710, 27692), (805, 24424), (860, 22862), (920, 21371), (989, 19880), (994, 19780), (1204, 16330), (1288, 15265), (1420, 13846), (1505, 13064), (1610, 12212), (1633, 12040), (1720, 11431), (1978, 9940), (1988, 9890), (2408, 8165), (2485, 7912), (2840, 6923), (3010, 6532), (3053, 6440), (3220, 6106), (3266, 6020), (3956, 4970), (3976, 4945)]