19909812

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:253

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 34280268

約数列:

[1, 2, 3, 4, 6, 12, 13, 23, 26, 31, 39, 46, 52, 62, 69, 78, 92, 93, 124, 138, 156, 179, 186, 276, 299, 358, 372, 403, 537, 598, 713, 716, 806, 897, 1074, 1196, 1209, 1426, 1612, 1794, 2139, 2148, 2327, 2418, 2852, 3588, 4117, 4278, 4654, 4836, 5549, 6981, 8234, 8556, 9269, 9308, 11098, 12351, 13962, 16468, 16647, 18538, 22196, 24702, 27807, 27924, 33294, 37076, 49404, 53521, 55614, 66588, 72137, 107042, 111228, 127627, 144274, 160563, 214084, 216411, 255254, 288548, 321126, 382881, 432822, 510508, 642252, 765762, 865644, 1531524, 1659151, 3318302, 4977453, 6636604, 9954906, 19909812]

約数ペア:

[(1, 19909812), (2, 9954906), (3, 6636604), (4, 4977453), (6, 3318302), (12, 1659151), (13, 1531524), (23, 865644), (26, 765762), (31, 642252), (39, 510508), (46, 432822), (52, 382881), (62, 321126), (69, 288548), (78, 255254), (92, 216411), (93, 214084), (124, 160563), (138, 144274), (156, 127627), (179, 111228), (186, 107042), (276, 72137), (299, 66588), (358, 55614), (372, 53521), (403, 49404), (537, 37076), (598, 33294), (713, 27924), (716, 27807), (806, 24702), (897, 22196), (1074, 18538), (1196, 16647), (1209, 16468), (1426, 13962), (1612, 12351), (1794, 11098), (2139, 9308), (2148, 9269), (2327, 8556), (2418, 8234), (2852, 6981), (3588, 5549), (4117, 4836), (4278, 4654)]