19771180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 50577408

約数和(自身を除く): 30806228

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 31, 44, 52, 55, 62, 65, 110, 124, 130, 143, 155, 220, 223, 260, 286, 310, 341, 403, 446, 572, 620, 682, 715, 806, 892, 1115, 1364, 1430, 1612, 1705, 2015, 2230, 2453, 2860, 2899, 3410, 4030, 4433, 4460, 4906, 5798, 6820, 6913, 8060, 8866, 9812, 11596, 12265, 13826, 14495, 17732, 22165, 24530, 27652, 28990, 31889, 34565, 44330, 49060, 57980, 63778, 69130, 76043, 88660, 89869, 127556, 138260, 152086, 159445, 179738, 304172, 318890, 359476, 380215, 449345, 637780, 760430, 898690, 988559, 1520860, 1797380, 1977118, 3954236, 4942795, 9885590, 19771180]

約数ペア:

[(1, 19771180), (2, 9885590), (4, 4942795), (5, 3954236), (10, 1977118), (11, 1797380), (13, 1520860), (20, 988559), (22, 898690), (26, 760430), (31, 637780), (44, 449345), (52, 380215), (55, 359476), (62, 318890), (65, 304172), (110, 179738), (124, 159445), (130, 152086), (143, 138260), (155, 127556), (220, 89869), (223, 88660), (260, 76043), (286, 69130), (310, 63778), (341, 57980), (403, 49060), (446, 44330), (572, 34565), (620, 31889), (682, 28990), (715, 27652), (806, 24530), (892, 22165), (1115, 17732), (1364, 14495), (1430, 13826), (1612, 12265), (1705, 11596), (2015, 9812), (2230, 8866), (2453, 8060), (2860, 6913), (2899, 6820), (3410, 5798), (4030, 4906), (4433, 4460)]