19873150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1571}}^1$

素因数の和:1617

約数の個数: 48

約数和(自身を含む): 42104448

約数和(自身を除く): 22231298

約数列:

[1, 2, 5, 10, 11, 22, 23, 25, 46, 50, 55, 110, 115, 230, 253, 275, 506, 550, 575, 1150, 1265, 1571, 2530, 3142, 6325, 7855, 12650, 15710, 17281, 34562, 36133, 39275, 72266, 78550, 86405, 172810, 180665, 361330, 397463, 432025, 794926, 864050, 903325, 1806650, 1987315, 3974630, 9936575, 19873150]

約数ペア:

[(1, 19873150), (2, 9936575), (5, 3974630), (10, 1987315), (11, 1806650), (22, 903325), (23, 864050), (25, 794926), (46, 432025), (50, 397463), (55, 361330), (110, 180665), (115, 172810), (230, 86405), (253, 78550), (275, 72266), (506, 39275), (550, 36133), (575, 34562), (1150, 17281), (1265, 15710), (1571, 12650), (2530, 7855), (3142, 6325)]