121921280

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1$

素因数の和:482

約数の個数: 144

約数和(自身を含む): 333777024

約数和(自身を除く): 211855744

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 160, 170, 208, 221, 256, 260, 272, 320, 340, 416, 431, 442, 520, 544, 640, 680, 832, 862, 884, 1040, 1088, 1105, 1280, 1360, 1664, 1724, 1768, 2080, 2155, 2176, 2210, 2720, 3328, 3448, 3536, 4160, 4310, 4352, 4420, 5440, 5603, 6896, 7072, 7327, 8320, 8620, 8840, 10880, 11206, 13792, 14144, 14654, 16640, 17240, 17680, 21760, 22412, 27584, 28015, 28288, 29308, 34480, 35360, 36635, 44824, 55168, 56030, 56576, 58616, 68960, 70720, 73270, 89648, 95251, 110336, 112060, 117232, 137920, 141440, 146540, 179296, 190502, 224120, 234464, 275840, 282880, 293080, 358592, 381004, 448240, 468928, 476255, 551680, 586160, 717184, 762008, 896480, 937856, 952510, 1172320, 1434368, 1524016, 1792960, 1875712, 1905020, 2344640, 3048032, 3585920, 3810040, 4689280, 6096064, 7171840, 7620080, 9378560, 12192128, 15240160, 24384256, 30480320, 60960640, 121921280]

約数ペア:

[(1, 121921280), (2, 60960640), (4, 30480320), (5, 24384256), (8, 15240160), (10, 12192128), (13, 9378560), (16, 7620080), (17, 7171840), (20, 6096064), (26, 4689280), (32, 3810040), (34, 3585920), (40, 3048032), (52, 2344640), (64, 1905020), (65, 1875712), (68, 1792960), (80, 1524016), (85, 1434368), (104, 1172320), (128, 952510), (130, 937856), (136, 896480), (160, 762008), (170, 717184), (208, 586160), (221, 551680), (256, 476255), (260, 468928), (272, 448240), (320, 381004), (340, 358592), (416, 293080), (431, 282880), (442, 275840), (520, 234464), (544, 224120), (640, 190502), (680, 179296), (832, 146540), (862, 141440), (884, 137920), (1040, 117232), (1088, 112060), (1105, 110336), (1280, 95251), (1360, 89648), (1664, 73270), (1724, 70720), (1768, 68960), (2080, 58616), (2155, 56576), (2176, 56030), (2210, 55168), (2720, 44824), (3328, 36635), (3448, 35360), (3536, 34480), (4160, 29308), (4310, 28288), (4352, 28015), (4420, 27584), (5440, 22412), (5603, 21760), (6896, 17680), (7072, 17240), (7327, 16640), (8320, 14654), (8620, 14144), (8840, 13792), (10880, 11206)]