161219840

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 144

約数和(自身を含む): 423843840

約数和(自身を除く): 262624000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 124, 128, 136, 155, 160, 170, 239, 248, 256, 272, 310, 320, 340, 478, 496, 527, 544, 620, 640, 680, 956, 992, 1054, 1088, 1195, 1240, 1280, 1360, 1912, 1984, 2108, 2176, 2390, 2480, 2635, 2720, 3824, 3968, 4063, 4216, 4352, 4780, 4960, 5270, 5440, 7409, 7648, 7936, 8126, 8432, 9560, 9920, 10540, 10880, 14818, 15296, 16252, 16864, 19120, 19840, 20315, 21080, 21760, 29636, 30592, 32504, 33728, 37045, 38240, 39680, 40630, 42160, 59272, 61184, 65008, 67456, 74090, 76480, 81260, 84320, 118544, 125953, 130016, 134912, 148180, 152960, 162520, 168640, 237088, 251906, 260032, 296360, 305920, 325040, 337280, 474176, 503812, 520064, 592720, 629765, 650080, 674560, 948352, 1007624, 1040128, 1185440, 1259530, 1300160, 1896704, 2015248, 2370880, 2519060, 2600320, 4030496, 4741760, 5038120, 5200640, 8060992, 9483520, 10076240, 16121984, 20152480, 32243968, 40304960, 80609920, 161219840]

約数ペア:

[(1, 161219840), (2, 80609920), (4, 40304960), (5, 32243968), (8, 20152480), (10, 16121984), (16, 10076240), (17, 9483520), (20, 8060992), (31, 5200640), (32, 5038120), (34, 4741760), (40, 4030496), (62, 2600320), (64, 2519060), (68, 2370880), (80, 2015248), (85, 1896704), (124, 1300160), (128, 1259530), (136, 1185440), (155, 1040128), (160, 1007624), (170, 948352), (239, 674560), (248, 650080), (256, 629765), (272, 592720), (310, 520064), (320, 503812), (340, 474176), (478, 337280), (496, 325040), (527, 305920), (544, 296360), (620, 260032), (640, 251906), (680, 237088), (956, 168640), (992, 162520), (1054, 152960), (1088, 148180), (1195, 134912), (1240, 130016), (1280, 125953), (1360, 118544), (1912, 84320), (1984, 81260), (2108, 76480), (2176, 74090), (2390, 67456), (2480, 65008), (2635, 61184), (2720, 59272), (3824, 42160), (3968, 40630), (4063, 39680), (4216, 38240), (4352, 37045), (4780, 33728), (4960, 32504), (5270, 30592), (5440, 29636), (7409, 21760), (7648, 21080), (7936, 20315), (8126, 19840), (8432, 19120), (9560, 16864), (9920, 16252), (10540, 15296), (10880, 14818)]