20731568

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:103

約数の個数: 120

約数和(自身を含む): 51465456

約数和(自身を除く): 30733888

約数列:

[1, 2, 4, 8, 11, 13, 16, 17, 22, 26, 34, 41, 44, 52, 68, 82, 88, 104, 136, 143, 164, 169, 176, 187, 208, 221, 272, 286, 328, 338, 374, 442, 451, 533, 572, 656, 676, 697, 748, 884, 902, 1066, 1144, 1352, 1394, 1496, 1768, 1804, 1859, 2132, 2288, 2431, 2704, 2788, 2873, 2992, 3536, 3608, 3718, 4264, 4862, 5576, 5746, 5863, 6929, 7216, 7436, 7667, 8528, 9061, 9724, 11152, 11492, 11726, 13858, 14872, 15334, 18122, 19448, 22984, 23452, 27716, 29744, 30668, 31603, 36244, 38896, 45968, 46904, 55432, 61336, 63206, 72488, 76219, 93808, 99671, 110864, 117793, 122672, 126412, 144976, 152438, 199342, 235586, 252824, 304876, 398684, 471172, 505648, 609752, 797368, 942344, 1219504, 1295723, 1594736, 1884688, 2591446, 5182892, 10365784, 20731568]

約数ペア:

[(1, 20731568), (2, 10365784), (4, 5182892), (8, 2591446), (11, 1884688), (13, 1594736), (16, 1295723), (17, 1219504), (22, 942344), (26, 797368), (34, 609752), (41, 505648), (44, 471172), (52, 398684), (68, 304876), (82, 252824), (88, 235586), (104, 199342), (136, 152438), (143, 144976), (164, 126412), (169, 122672), (176, 117793), (187, 110864), (208, 99671), (221, 93808), (272, 76219), (286, 72488), (328, 63206), (338, 61336), (374, 55432), (442, 46904), (451, 45968), (533, 38896), (572, 36244), (656, 31603), (676, 30668), (697, 29744), (748, 27716), (884, 23452), (902, 22984), (1066, 19448), (1144, 18122), (1352, 15334), (1394, 14872), (1496, 13858), (1768, 11726), (1804, 11492), (1859, 11152), (2132, 9724), (2288, 9061), (2431, 8528), (2704, 7667), (2788, 7436), (2873, 7216), (2992, 6929), (3536, 5863), (3608, 5746), (3718, 5576), (4264, 4862)]