21638988

素因数分解:

$2^2\times 3^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:106

約数の個数: 180

約数和(自身を含む): 69521760

約数和(自身を除く): 47882772

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 29, 36, 42, 47, 49, 54, 58, 63, 81, 84, 87, 94, 98, 108, 116, 126, 141, 147, 162, 174, 188, 189, 196, 203, 252, 261, 282, 294, 324, 329, 348, 378, 406, 423, 441, 522, 564, 567, 588, 609, 658, 756, 783, 812, 846, 882, 987, 1044, 1134, 1218, 1269, 1316, 1323, 1363, 1421, 1566, 1692, 1764, 1827, 1974, 2268, 2303, 2349, 2436, 2538, 2646, 2726, 2842, 2961, 3132, 3654, 3807, 3948, 3969, 4089, 4263, 4606, 4698, 5076, 5292, 5452, 5481, 5684, 5922, 6909, 7308, 7614, 7938, 8178, 8526, 8883, 9212, 9396, 9541, 10962, 11844, 12267, 12789, 13818, 15228, 15876, 16356, 16443, 17052, 17766, 19082, 20727, 21924, 24534, 25578, 26649, 27636, 28623, 32886, 35532, 36801, 38164, 38367, 41454, 49068, 51156, 53298, 57246, 62181, 65772, 66787, 73602, 76734, 82908, 85869, 106596, 110403, 114492, 115101, 124362, 133574, 147204, 153468, 171738, 186543, 200361, 220806, 230202, 248724, 257607, 267148, 343476, 373086, 400722, 441612, 460404, 515214, 601083, 746172, 772821, 801444, 1030428, 1202166, 1545642, 1803249, 2404332, 3091284, 3606498, 5409747, 7212996, 10819494, 21638988]

約数ペア:

[(1, 21638988), (2, 10819494), (3, 7212996), (4, 5409747), (6, 3606498), (7, 3091284), (9, 2404332), (12, 1803249), (14, 1545642), (18, 1202166), (21, 1030428), (27, 801444), (28, 772821), (29, 746172), (36, 601083), (42, 515214), (47, 460404), (49, 441612), (54, 400722), (58, 373086), (63, 343476), (81, 267148), (84, 257607), (87, 248724), (94, 230202), (98, 220806), (108, 200361), (116, 186543), (126, 171738), (141, 153468), (147, 147204), (162, 133574), (174, 124362), (188, 115101), (189, 114492), (196, 110403), (203, 106596), (252, 85869), (261, 82908), (282, 76734), (294, 73602), (324, 66787), (329, 65772), (348, 62181), (378, 57246), (406, 53298), (423, 51156), (441, 49068), (522, 41454), (564, 38367), (567, 38164), (588, 36801), (609, 35532), (658, 32886), (756, 28623), (783, 27636), (812, 26649), (846, 25578), (882, 24534), (987, 21924), (1044, 20727), (1134, 19082), (1218, 17766), (1269, 17052), (1316, 16443), (1323, 16356), (1363, 15876), (1421, 15228), (1566, 13818), (1692, 12789), (1764, 12267), (1827, 11844), (1974, 10962), (2268, 9541), (2303, 9396), (2349, 9212), (2436, 8883), (2538, 8526), (2646, 8178), (2726, 7938), (2842, 7614), (2961, 7308), (3132, 6909), (3654, 5922), (3807, 5684), (3948, 5481), (3969, 5452), (4089, 5292), (4263, 5076), (4606, 4698)]