19989480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{449}}^1$

素因数の和:523

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 49994520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 53, 56, 60, 70, 84, 105, 106, 120, 140, 159, 168, 210, 212, 265, 280, 318, 371, 420, 424, 449, 530, 636, 742, 795, 840, 898, 1060, 1113, 1272, 1347, 1484, 1590, 1796, 1855, 2120, 2226, 2245, 2694, 2968, 3143, 3180, 3592, 3710, 4452, 4490, 5388, 5565, 6286, 6360, 6735, 7420, 8904, 8980, 9429, 10776, 11130, 12572, 13470, 14840, 15715, 17960, 18858, 22260, 23797, 25144, 26940, 31430, 37716, 44520, 47145, 47594, 53880, 62860, 71391, 75432, 94290, 95188, 118985, 125720, 142782, 166579, 188580, 190376, 237970, 285564, 333158, 356955, 377160, 475940, 499737, 571128, 666316, 713910, 832895, 951880, 999474, 1332632, 1427820, 1665790, 1998948, 2498685, 2855640, 3331580, 3997896, 4997370, 6663160, 9994740, 19989480]

約数ペア:

[(1, 19989480), (2, 9994740), (3, 6663160), (4, 4997370), (5, 3997896), (6, 3331580), (7, 2855640), (8, 2498685), (10, 1998948), (12, 1665790), (14, 1427820), (15, 1332632), (20, 999474), (21, 951880), (24, 832895), (28, 713910), (30, 666316), (35, 571128), (40, 499737), (42, 475940), (53, 377160), (56, 356955), (60, 333158), (70, 285564), (84, 237970), (105, 190376), (106, 188580), (120, 166579), (140, 142782), (159, 125720), (168, 118985), (210, 95188), (212, 94290), (265, 75432), (280, 71391), (318, 62860), (371, 53880), (420, 47594), (424, 47145), (449, 44520), (530, 37716), (636, 31430), (742, 26940), (795, 25144), (840, 23797), (898, 22260), (1060, 18858), (1113, 17960), (1272, 15715), (1347, 14840), (1484, 13470), (1590, 12572), (1796, 11130), (1855, 10776), (2120, 9429), (2226, 8980), (2245, 8904), (2694, 7420), (2968, 6735), (3143, 6360), (3180, 6286), (3592, 5565), (3710, 5388), (4452, 4490)]