21203208

素因数分解:

$2^3\times 3^5\times {\mathrm{13}}^1\times {\mathrm{839}}^1$

素因数の和:873

約数の個数: 96

約数和(自身を含む): 64209600

約数和(自身を除く): 43006392

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 81, 104, 108, 117, 156, 162, 216, 234, 243, 312, 324, 351, 468, 486, 648, 702, 839, 936, 972, 1053, 1404, 1678, 1944, 2106, 2517, 2808, 3159, 3356, 4212, 5034, 6318, 6712, 7551, 8424, 10068, 10907, 12636, 15102, 20136, 21814, 22653, 25272, 30204, 32721, 43628, 45306, 60408, 65442, 67959, 87256, 90612, 98163, 130884, 135918, 181224, 196326, 203877, 261768, 271836, 294489, 392652, 407754, 543672, 588978, 785304, 815508, 883467, 1177956, 1631016, 1766934, 2355912, 2650401, 3533868, 5300802, 7067736, 10601604, 21203208]

約数ペア:

[(1, 21203208), (2, 10601604), (3, 7067736), (4, 5300802), (6, 3533868), (8, 2650401), (9, 2355912), (12, 1766934), (13, 1631016), (18, 1177956), (24, 883467), (26, 815508), (27, 785304), (36, 588978), (39, 543672), (52, 407754), (54, 392652), (72, 294489), (78, 271836), (81, 261768), (104, 203877), (108, 196326), (117, 181224), (156, 135918), (162, 130884), (216, 98163), (234, 90612), (243, 87256), (312, 67959), (324, 65442), (351, 60408), (468, 45306), (486, 43628), (648, 32721), (702, 30204), (839, 25272), (936, 22653), (972, 21814), (1053, 20136), (1404, 15102), (1678, 12636), (1944, 10907), (2106, 10068), (2517, 8424), (2808, 7551), (3159, 6712), (3356, 6318), (4212, 5034)]