18378955

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 28293120

約数和(自身を除く): 9914165

約数列:

[1, 5, 7, 17, 23, 35, 79, 85, 115, 119, 161, 289, 391, 395, 553, 595, 805, 1343, 1445, 1817, 1955, 2023, 2737, 2765, 6647, 6715, 9085, 9401, 10115, 12719, 13685, 22831, 30889, 33235, 46529, 47005, 63595, 114155, 154445, 159817, 216223, 232645, 525113, 799085, 1081115, 2625565, 3675791, 18378955]

約数ペア:

[(1, 18378955), (5, 3675791), (7, 2625565), (17, 1081115), (23, 799085), (35, 525113), (79, 232645), (85, 216223), (115, 159817), (119, 154445), (161, 114155), (289, 63595), (391, 47005), (395, 46529), (553, 33235), (595, 30889), (805, 22831), (1343, 13685), (1445, 12719), (1817, 10115), (1955, 9401), (2023, 9085), (2737, 6715), (2765, 6647)]