21109788

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{3989}}^1$

素因数の和:4016

約数の個数: 72

約数和(自身を含む): 63680400

約数和(自身を除く): 42570612

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 54, 63, 84, 98, 108, 126, 147, 189, 196, 252, 294, 378, 441, 588, 756, 882, 1323, 1764, 2646, 3989, 5292, 7978, 11967, 15956, 23934, 27923, 35901, 47868, 55846, 71802, 83769, 107703, 111692, 143604, 167538, 195461, 215406, 251307, 335076, 390922, 430812, 502614, 586383, 753921, 781844, 1005228, 1172766, 1507842, 1759149, 2345532, 3015684, 3518298, 5277447, 7036596, 10554894, 21109788]

約数ペア:

[(1, 21109788), (2, 10554894), (3, 7036596), (4, 5277447), (6, 3518298), (7, 3015684), (9, 2345532), (12, 1759149), (14, 1507842), (18, 1172766), (21, 1005228), (27, 781844), (28, 753921), (36, 586383), (42, 502614), (49, 430812), (54, 390922), (63, 335076), (84, 251307), (98, 215406), (108, 195461), (126, 167538), (147, 143604), (189, 111692), (196, 107703), (252, 83769), (294, 71802), (378, 55846), (441, 47868), (588, 35901), (756, 27923), (882, 23934), (1323, 15956), (1764, 11967), (2646, 7978), (3989, 5292)]