19015520

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6991}}^1$

素因数の和:7023

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 28558048

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 6991, 13982, 27964, 34955, 55928, 69910, 111856, 118847, 139820, 223712, 237694, 279640, 475388, 559280, 594235, 950776, 1118560, 1188470, 1901552, 2376940, 3803104, 4753880, 9507760, 19015520]

約数ペア:

[(1, 19015520), (2, 9507760), (4, 4753880), (5, 3803104), (8, 2376940), (10, 1901552), (16, 1188470), (17, 1118560), (20, 950776), (32, 594235), (34, 559280), (40, 475388), (68, 279640), (80, 237694), (85, 223712), (136, 139820), (160, 118847), (170, 111856), (272, 69910), (340, 55928), (544, 34955), (680, 27964), (1360, 13982), (2720, 6991)]