20197760

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1$

素因数の和:200

約数の個数: 128

約数和(自身を含む): 55814400

約数和(自身を除く): 35616640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 64, 76, 80, 88, 95, 110, 128, 151, 152, 160, 176, 190, 209, 220, 302, 304, 320, 352, 380, 418, 440, 604, 608, 640, 704, 755, 760, 836, 880, 1045, 1208, 1216, 1408, 1510, 1520, 1661, 1672, 1760, 2090, 2416, 2432, 2869, 3020, 3040, 3322, 3344, 3520, 4180, 4832, 5738, 6040, 6080, 6644, 6688, 7040, 8305, 8360, 9664, 11476, 12080, 12160, 13288, 13376, 14345, 16610, 16720, 19328, 22952, 24160, 26576, 26752, 28690, 31559, 33220, 33440, 45904, 48320, 53152, 57380, 63118, 66440, 66880, 91808, 96640, 106304, 114760, 126236, 132880, 133760, 157795, 183616, 212608, 229520, 252472, 265760, 315590, 367232, 459040, 504944, 531520, 631180, 918080, 1009888, 1063040, 1262360, 1836160, 2019776, 2524720, 4039552, 5049440, 10098880, 20197760]

約数ペア:

[(1, 20197760), (2, 10098880), (4, 5049440), (5, 4039552), (8, 2524720), (10, 2019776), (11, 1836160), (16, 1262360), (19, 1063040), (20, 1009888), (22, 918080), (32, 631180), (38, 531520), (40, 504944), (44, 459040), (55, 367232), (64, 315590), (76, 265760), (80, 252472), (88, 229520), (95, 212608), (110, 183616), (128, 157795), (151, 133760), (152, 132880), (160, 126236), (176, 114760), (190, 106304), (209, 96640), (220, 91808), (302, 66880), (304, 66440), (320, 63118), (352, 57380), (380, 53152), (418, 48320), (440, 45904), (604, 33440), (608, 33220), (640, 31559), (704, 28690), (755, 26752), (760, 26576), (836, 24160), (880, 22952), (1045, 19328), (1208, 16720), (1216, 16610), (1408, 14345), (1510, 13376), (1520, 13288), (1661, 12160), (1672, 12080), (1760, 11476), (2090, 9664), (2416, 8360), (2432, 8305), (2869, 7040), (3020, 6688), (3040, 6644), (3322, 6080), (3344, 6040), (3520, 5738), (4180, 4832)]