161927720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{4493}}^1$

素因数の和:4574

約数の個数: 64

約数和(自身を含む): 393135120

約数和(自身を除く): 231207400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 53, 68, 85, 106, 136, 170, 212, 265, 340, 424, 530, 680, 901, 1060, 1802, 2120, 3604, 4493, 4505, 7208, 8986, 9010, 17972, 18020, 22465, 35944, 36040, 44930, 76381, 89860, 152762, 179720, 238129, 305524, 381905, 476258, 611048, 763810, 952516, 1190645, 1527620, 1905032, 2381290, 3055240, 4048193, 4762580, 8096386, 9525160, 16192772, 20240965, 32385544, 40481930, 80963860, 161927720]

約数ペア:

[(1, 161927720), (2, 80963860), (4, 40481930), (5, 32385544), (8, 20240965), (10, 16192772), (17, 9525160), (20, 8096386), (34, 4762580), (40, 4048193), (53, 3055240), (68, 2381290), (85, 1905032), (106, 1527620), (136, 1190645), (170, 952516), (212, 763810), (265, 611048), (340, 476258), (424, 381905), (530, 305524), (680, 238129), (901, 179720), (1060, 152762), (1802, 89860), (2120, 76381), (3604, 44930), (4493, 36040), (4505, 35944), (7208, 22465), (8986, 18020), (9010, 17972)]