21568456

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:135

約数の個数: 96

約数和(自身を含む): 52176960

約数和(自身を除く): 30608504

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 43, 52, 53, 56, 86, 91, 104, 106, 169, 172, 182, 212, 301, 338, 344, 364, 371, 424, 559, 602, 676, 689, 728, 742, 1118, 1183, 1204, 1352, 1378, 1484, 2236, 2279, 2366, 2408, 2756, 2968, 3913, 4472, 4558, 4732, 4823, 5512, 7267, 7826, 8957, 9116, 9464, 9646, 14534, 15652, 15953, 17914, 18232, 19292, 29068, 29627, 31304, 31906, 35828, 38584, 50869, 58136, 59254, 62699, 63812, 71656, 101738, 118508, 125398, 127624, 203476, 207389, 237016, 250796, 385151, 406952, 414778, 501592, 770302, 829556, 1540604, 1659112, 2696057, 3081208, 5392114, 10784228, 21568456]

約数ペア:

[(1, 21568456), (2, 10784228), (4, 5392114), (7, 3081208), (8, 2696057), (13, 1659112), (14, 1540604), (26, 829556), (28, 770302), (43, 501592), (52, 414778), (53, 406952), (56, 385151), (86, 250796), (91, 237016), (104, 207389), (106, 203476), (169, 127624), (172, 125398), (182, 118508), (212, 101738), (301, 71656), (338, 63812), (344, 62699), (364, 59254), (371, 58136), (424, 50869), (559, 38584), (602, 35828), (676, 31906), (689, 31304), (728, 29627), (742, 29068), (1118, 19292), (1183, 18232), (1204, 17914), (1352, 15953), (1378, 15652), (1484, 14534), (2236, 9646), (2279, 9464), (2366, 9116), (2408, 8957), (2756, 7826), (2968, 7267), (3913, 5512), (4472, 4823), (4558, 4732)]