1218165520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{8191}}^1$

素因数の和:8241

約数の個数: 120

約数和(自身を含む): 3346071552

約数和(自身を除く): 2127906032

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 169, 176, 208, 220, 260, 286, 338, 440, 520, 572, 676, 715, 845, 880, 1040, 1144, 1352, 1430, 1690, 1859, 2288, 2704, 2860, 3380, 3718, 5720, 6760, 7436, 8191, 9295, 11440, 13520, 14872, 16382, 18590, 29744, 32764, 37180, 40955, 65528, 74360, 81910, 90101, 106483, 131056, 148720, 163820, 180202, 212966, 327640, 360404, 425932, 450505, 532415, 655280, 720808, 851864, 901010, 1064830, 1171313, 1384279, 1441616, 1703728, 1802020, 2129660, 2342626, 2768558, 3604040, 4259320, 4685252, 5537116, 5856565, 6921395, 7208080, 8518640, 9370504, 11074232, 11713130, 13842790, 15227069, 18741008, 22148464, 23426260, 27685580, 30454138, 46852520, 55371160, 60908276, 76135345, 93705040, 110742320, 121816552, 152270690, 243633104, 304541380, 609082760, 1218165520]

約数ペア:

[(1, 1218165520), (2, 609082760), (4, 304541380), (5, 243633104), (8, 152270690), (10, 121816552), (11, 110742320), (13, 93705040), (16, 76135345), (20, 60908276), (22, 55371160), (26, 46852520), (40, 30454138), (44, 27685580), (52, 23426260), (55, 22148464), (65, 18741008), (80, 15227069), (88, 13842790), (104, 11713130), (110, 11074232), (130, 9370504), (143, 8518640), (169, 7208080), (176, 6921395), (208, 5856565), (220, 5537116), (260, 4685252), (286, 4259320), (338, 3604040), (440, 2768558), (520, 2342626), (572, 2129660), (676, 1802020), (715, 1703728), (845, 1441616), (880, 1384279), (1040, 1171313), (1144, 1064830), (1352, 901010), (1430, 851864), (1690, 720808), (1859, 655280), (2288, 532415), (2704, 450505), (2860, 425932), (3380, 360404), (3718, 327640), (5720, 212966), (6760, 180202), (7436, 163820), (8191, 148720), (9295, 131056), (11440, 106483), (13520, 90101), (14872, 81910), (16382, 74360), (18590, 65528), (29744, 40955), (32764, 37180)]