19681480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5407}}^1$

素因数の和:5438

約数の個数: 64

約数和(自身を含む): 54512640

約数和(自身を除く): 34831160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5407, 10814, 21628, 27035, 37849, 43256, 54070, 70291, 75698, 108140, 140582, 151396, 189245, 216280, 281164, 302792, 351455, 378490, 492037, 562328, 702910, 756980, 984074, 1405820, 1513960, 1968148, 2460185, 2811640, 3936296, 4920370, 9840740, 19681480]

約数ペア:

[(1, 19681480), (2, 9840740), (4, 4920370), (5, 3936296), (7, 2811640), (8, 2460185), (10, 1968148), (13, 1513960), (14, 1405820), (20, 984074), (26, 756980), (28, 702910), (35, 562328), (40, 492037), (52, 378490), (56, 351455), (65, 302792), (70, 281164), (91, 216280), (104, 189245), (130, 151396), (140, 140582), (182, 108140), (260, 75698), (280, 70291), (364, 54070), (455, 43256), (520, 37849), (728, 27035), (910, 21628), (1820, 10814), (3640, 5407)]