81849920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:308

約数の個数: 112

約数和(自身を含む): 207556608

約数和(自身を除く): 125706688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 62, 64, 74, 80, 124, 148, 155, 160, 185, 223, 248, 296, 310, 320, 370, 446, 496, 592, 620, 740, 892, 992, 1115, 1147, 1184, 1240, 1480, 1784, 1984, 2230, 2294, 2368, 2480, 2960, 3568, 4460, 4588, 4960, 5735, 5920, 6913, 7136, 8251, 8920, 9176, 9920, 11470, 11840, 13826, 14272, 16502, 17840, 18352, 22940, 27652, 33004, 34565, 35680, 36704, 41255, 45880, 55304, 66008, 69130, 71360, 73408, 82510, 91760, 110608, 132016, 138260, 165020, 183520, 221216, 255781, 264032, 276520, 330040, 367040, 442432, 511562, 528064, 553040, 660080, 1023124, 1106080, 1278905, 1320160, 2046248, 2212160, 2557810, 2640320, 4092496, 5115620, 8184992, 10231240, 16369984, 20462480, 40924960, 81849920]

約数ペア:

[(1, 81849920), (2, 40924960), (4, 20462480), (5, 16369984), (8, 10231240), (10, 8184992), (16, 5115620), (20, 4092496), (31, 2640320), (32, 2557810), (37, 2212160), (40, 2046248), (62, 1320160), (64, 1278905), (74, 1106080), (80, 1023124), (124, 660080), (148, 553040), (155, 528064), (160, 511562), (185, 442432), (223, 367040), (248, 330040), (296, 276520), (310, 264032), (320, 255781), (370, 221216), (446, 183520), (496, 165020), (592, 138260), (620, 132016), (740, 110608), (892, 91760), (992, 82510), (1115, 73408), (1147, 71360), (1184, 69130), (1240, 66008), (1480, 55304), (1784, 45880), (1984, 41255), (2230, 36704), (2294, 35680), (2368, 34565), (2480, 33004), (2960, 27652), (3568, 22940), (4460, 18352), (4588, 17840), (4960, 16502), (5735, 14272), (5920, 13826), (6913, 11840), (7136, 11470), (8251, 9920), (8920, 9176)]