21153678

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 128

約数和(自身を含む): 57480192

約数和(自身を除く): 36326514

約数列:

[1, 2, 3, 6, 7, 13, 14, 17, 21, 26, 34, 39, 42, 43, 51, 53, 78, 86, 91, 102, 106, 119, 129, 159, 182, 221, 238, 258, 273, 301, 318, 357, 371, 442, 546, 559, 602, 663, 689, 714, 731, 742, 901, 903, 1113, 1118, 1326, 1378, 1462, 1547, 1677, 1802, 1806, 2067, 2193, 2226, 2279, 2703, 3094, 3354, 3913, 4134, 4386, 4558, 4641, 4823, 5117, 5406, 6307, 6837, 7826, 9282, 9503, 9646, 10234, 11713, 11739, 12614, 13674, 14469, 15351, 15953, 18921, 19006, 23426, 23478, 28509, 28938, 29627, 30702, 31906, 35139, 37842, 38743, 47859, 57018, 59254, 66521, 70278, 77486, 81991, 88881, 95718, 116229, 133042, 163982, 177762, 199563, 207389, 232458, 245973, 271201, 399126, 414778, 491946, 503659, 542402, 622167, 813603, 1007318, 1244334, 1510977, 1627206, 3021954, 3525613, 7051226, 10576839, 21153678]

約数ペア:

[(1, 21153678), (2, 10576839), (3, 7051226), (6, 3525613), (7, 3021954), (13, 1627206), (14, 1510977), (17, 1244334), (21, 1007318), (26, 813603), (34, 622167), (39, 542402), (42, 503659), (43, 491946), (51, 414778), (53, 399126), (78, 271201), (86, 245973), (91, 232458), (102, 207389), (106, 199563), (119, 177762), (129, 163982), (159, 133042), (182, 116229), (221, 95718), (238, 88881), (258, 81991), (273, 77486), (301, 70278), (318, 66521), (357, 59254), (371, 57018), (442, 47859), (546, 38743), (559, 37842), (602, 35139), (663, 31906), (689, 30702), (714, 29627), (731, 28938), (742, 28509), (901, 23478), (903, 23426), (1113, 19006), (1118, 18921), (1326, 15953), (1378, 15351), (1462, 14469), (1547, 13674), (1677, 12614), (1802, 11739), (1806, 11713), (2067, 10234), (2193, 9646), (2226, 9503), (2279, 9282), (2703, 7826), (3094, 6837), (3354, 6307), (3913, 5406), (4134, 5117), (4386, 4823), (4558, 4641)]