21921354

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1487}}^1$

素因数の和:1521

約数の個数: 80

約数和(自身を含む): 60496128

約数和(自身を除く): 38574774

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 63, 78, 81, 91, 117, 126, 162, 182, 189, 234, 273, 351, 378, 546, 567, 702, 819, 1053, 1134, 1487, 1638, 2106, 2457, 2974, 4461, 4914, 7371, 8922, 10409, 13383, 14742, 19331, 20818, 26766, 31227, 38662, 40149, 57993, 62454, 80298, 93681, 115986, 120447, 135317, 173979, 187362, 240894, 270634, 281043, 347958, 405951, 521937, 562086, 811902, 843129, 1043874, 1217853, 1565811, 1686258, 2435706, 3131622, 3653559, 7307118, 10960677, 21921354]

約数ペア:

[(1, 21921354), (2, 10960677), (3, 7307118), (6, 3653559), (7, 3131622), (9, 2435706), (13, 1686258), (14, 1565811), (18, 1217853), (21, 1043874), (26, 843129), (27, 811902), (39, 562086), (42, 521937), (54, 405951), (63, 347958), (78, 281043), (81, 270634), (91, 240894), (117, 187362), (126, 173979), (162, 135317), (182, 120447), (189, 115986), (234, 93681), (273, 80298), (351, 62454), (378, 57993), (546, 40149), (567, 38662), (702, 31227), (819, 26766), (1053, 20818), (1134, 19331), (1487, 14742), (1638, 13383), (2106, 10409), (2457, 8922), (2974, 7371), (4461, 4914)]