19608516

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:345

約数の個数: 72

約数和(自身を含む): 51891840

約数和(自身を除く): 32283324

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 53, 86, 106, 129, 159, 172, 212, 239, 258, 318, 387, 477, 478, 516, 636, 717, 774, 954, 956, 1434, 1548, 1908, 2151, 2279, 2868, 4302, 4558, 6837, 8604, 9116, 10277, 12667, 13674, 20511, 20554, 25334, 27348, 30831, 38001, 41022, 41108, 50668, 61662, 76002, 82044, 92493, 114003, 123324, 152004, 184986, 228006, 369972, 456012, 544681, 1089362, 1634043, 2178724, 3268086, 4902129, 6536172, 9804258, 19608516]

約数ペア:

[(1, 19608516), (2, 9804258), (3, 6536172), (4, 4902129), (6, 3268086), (9, 2178724), (12, 1634043), (18, 1089362), (36, 544681), (43, 456012), (53, 369972), (86, 228006), (106, 184986), (129, 152004), (159, 123324), (172, 114003), (212, 92493), (239, 82044), (258, 76002), (318, 61662), (387, 50668), (477, 41108), (478, 41022), (516, 38001), (636, 30831), (717, 27348), (774, 25334), (954, 20554), (956, 20511), (1434, 13674), (1548, 12667), (1908, 10277), (2151, 9116), (2279, 8604), (2868, 6837), (4302, 4558)]