19971720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1913}}^1$

素因数の和:1959

約数の個数: 96

約数和(自身を含む): 67181400

約数和(自身を除く): 47209680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 40, 45, 58, 60, 72, 87, 90, 116, 120, 145, 174, 180, 232, 261, 290, 348, 360, 435, 522, 580, 696, 870, 1044, 1160, 1305, 1740, 1913, 2088, 2610, 3480, 3826, 5220, 5739, 7652, 9565, 10440, 11478, 15304, 17217, 19130, 22956, 28695, 34434, 38260, 45912, 55477, 57390, 68868, 76520, 86085, 110954, 114780, 137736, 166431, 172170, 221908, 229560, 277385, 332862, 344340, 443816, 499293, 554770, 665724, 688680, 832155, 998586, 1109540, 1331448, 1664310, 1997172, 2219080, 2496465, 3328620, 3994344, 4992930, 6657240, 9985860, 19971720]

約数ペア:

[(1, 19971720), (2, 9985860), (3, 6657240), (4, 4992930), (5, 3994344), (6, 3328620), (8, 2496465), (9, 2219080), (10, 1997172), (12, 1664310), (15, 1331448), (18, 1109540), (20, 998586), (24, 832155), (29, 688680), (30, 665724), (36, 554770), (40, 499293), (45, 443816), (58, 344340), (60, 332862), (72, 277385), (87, 229560), (90, 221908), (116, 172170), (120, 166431), (145, 137736), (174, 114780), (180, 110954), (232, 86085), (261, 76520), (290, 68868), (348, 57390), (360, 55477), (435, 45912), (522, 38260), (580, 34434), (696, 28695), (870, 22956), (1044, 19130), (1160, 17217), (1305, 15304), (1740, 11478), (1913, 10440), (2088, 9565), (2610, 7652), (3480, 5739), (3826, 5220)]