12784720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:692

約数の個数: 80

約数和(自身を含む): 33747840

約数和(自身を除く): 20963120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 647, 760, 988, 1040, 1235, 1294, 1520, 1976, 2470, 2588, 3235, 3952, 4940, 5176, 6470, 8411, 9880, 10352, 12293, 12940, 16822, 19760, 24586, 25880, 33644, 42055, 49172, 51760, 61465, 67288, 84110, 98344, 122930, 134576, 159809, 168220, 196688, 245860, 319618, 336440, 491720, 639236, 672880, 799045, 983440, 1278472, 1598090, 2556944, 3196180, 6392360, 12784720]

約数ペア:

[(1, 12784720), (2, 6392360), (4, 3196180), (5, 2556944), (8, 1598090), (10, 1278472), (13, 983440), (16, 799045), (19, 672880), (20, 639236), (26, 491720), (38, 336440), (40, 319618), (52, 245860), (65, 196688), (76, 168220), (80, 159809), (95, 134576), (104, 122930), (130, 98344), (152, 84110), (190, 67288), (208, 61465), (247, 51760), (260, 49172), (304, 42055), (380, 33644), (494, 25880), (520, 24586), (647, 19760), (760, 16822), (988, 12940), (1040, 12293), (1235, 10352), (1294, 9880), (1520, 8411), (1976, 6470), (2470, 5176), (2588, 4940), (3235, 3952)]