1561099240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{431}}^1$

素因数の和:623

約数の個数: 128

約数和(自身を含む): 3822059520

約数和(自身を除く): 2260960280

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 127, 155, 184, 230, 248, 254, 310, 431, 460, 508, 620, 635, 713, 862, 920, 1016, 1240, 1270, 1426, 1724, 2155, 2540, 2852, 2921, 3448, 3565, 3937, 4310, 5080, 5704, 5842, 7130, 7874, 8620, 9913, 11684, 13361, 14260, 14605, 15748, 17240, 19685, 19826, 23368, 26722, 28520, 29210, 31496, 39370, 39652, 49565, 53444, 54737, 58420, 66805, 78740, 79304, 90551, 99130, 106888, 109474, 116840, 133610, 157480, 181102, 198260, 218948, 267220, 273685, 307303, 362204, 396520, 437896, 452755, 534440, 547370, 614606, 724408, 905510, 1094740, 1229212, 1258951, 1536515, 1696847, 1811020, 2189480, 2458424, 2517902, 3073030, 3393694, 3622040, 5035804, 6146060, 6294755, 6787388, 8484235, 10071608, 12292120, 12589510, 13574776, 16968470, 25179020, 33936940, 39027481, 50358040, 67873880, 78054962, 156109924, 195137405, 312219848, 390274810, 780549620, 1561099240]

約数ペア:

[(1, 1561099240), (2, 780549620), (4, 390274810), (5, 312219848), (8, 195137405), (10, 156109924), (20, 78054962), (23, 67873880), (31, 50358040), (40, 39027481), (46, 33936940), (62, 25179020), (92, 16968470), (115, 13574776), (124, 12589510), (127, 12292120), (155, 10071608), (184, 8484235), (230, 6787388), (248, 6294755), (254, 6146060), (310, 5035804), (431, 3622040), (460, 3393694), (508, 3073030), (620, 2517902), (635, 2458424), (713, 2189480), (862, 1811020), (920, 1696847), (1016, 1536515), (1240, 1258951), (1270, 1229212), (1426, 1094740), (1724, 905510), (2155, 724408), (2540, 614606), (2852, 547370), (2921, 534440), (3448, 452755), (3565, 437896), (3937, 396520), (4310, 362204), (5080, 307303), (5704, 273685), (5842, 267220), (7130, 218948), (7874, 198260), (8620, 181102), (9913, 157480), (11684, 133610), (13361, 116840), (14260, 109474), (14605, 106888), (15748, 99130), (17240, 90551), (19685, 79304), (19826, 78740), (23368, 66805), (26722, 58420), (28520, 54737), (29210, 53444), (31496, 49565), (39370, 39652)]