19966440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12799}}^1$

素因数の和:12826

約数の個数: 64

約数和(自身を含む): 64512000

約数和(自身を除く): 44545560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12799, 25598, 38397, 51196, 63995, 76794, 102392, 127990, 153588, 166387, 191985, 255980, 307176, 332774, 383970, 499161, 511960, 665548, 767940, 831935, 998322, 1331096, 1535880, 1663870, 1996644, 2495805, 3327740, 3993288, 4991610, 6655480, 9983220, 19966440]

約数ペア:

[(1, 19966440), (2, 9983220), (3, 6655480), (4, 4991610), (5, 3993288), (6, 3327740), (8, 2495805), (10, 1996644), (12, 1663870), (13, 1535880), (15, 1331096), (20, 998322), (24, 831935), (26, 767940), (30, 665548), (39, 511960), (40, 499161), (52, 383970), (60, 332774), (65, 307176), (78, 255980), (104, 191985), (120, 166387), (130, 153588), (156, 127990), (195, 102392), (260, 76794), (312, 63995), (390, 51196), (520, 38397), (780, 25598), (1560, 12799)]