19725040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{683}}^1$

素因数の和:734

約数の個数: 60

約数和(自身を含む): 48472344

約数和(自身を除く): 28747304

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 683, 722, 760, 1366, 1444, 1520, 1805, 2732, 2888, 3415, 3610, 5464, 5776, 6830, 7220, 10928, 12977, 13660, 14440, 25954, 27320, 28880, 51908, 54640, 64885, 103816, 129770, 207632, 246563, 259540, 493126, 519080, 986252, 1038160, 1232815, 1972504, 2465630, 3945008, 4931260, 9862520, 19725040]

約数ペア:

[(1, 19725040), (2, 9862520), (4, 4931260), (5, 3945008), (8, 2465630), (10, 1972504), (16, 1232815), (19, 1038160), (20, 986252), (38, 519080), (40, 493126), (76, 259540), (80, 246563), (95, 207632), (152, 129770), (190, 103816), (304, 64885), (361, 54640), (380, 51908), (683, 28880), (722, 27320), (760, 25954), (1366, 14440), (1444, 13660), (1520, 12977), (1805, 10928), (2732, 7220), (2888, 6830), (3415, 5776), (3610, 5464)]