21512946

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 56052864

約数和(自身を除く): 34539918

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 31, 39, 41, 42, 62, 78, 82, 91, 93, 123, 182, 186, 217, 246, 273, 287, 403, 434, 533, 546, 574, 651, 806, 861, 961, 1066, 1209, 1271, 1302, 1599, 1722, 1922, 2418, 2542, 2821, 2883, 3198, 3731, 3813, 5642, 5766, 6727, 7462, 7626, 8463, 8897, 11193, 12493, 13454, 16523, 16926, 17794, 20181, 22386, 24986, 26691, 33046, 37479, 39401, 40362, 49569, 53382, 74958, 78802, 87451, 99138, 115661, 118203, 174902, 231322, 236406, 262353, 275807, 346983, 512213, 524706, 551614, 693966, 827421, 1024426, 1536639, 1654842, 3073278, 3585491, 7170982, 10756473, 21512946]

約数ペア:

[(1, 21512946), (2, 10756473), (3, 7170982), (6, 3585491), (7, 3073278), (13, 1654842), (14, 1536639), (21, 1024426), (26, 827421), (31, 693966), (39, 551614), (41, 524706), (42, 512213), (62, 346983), (78, 275807), (82, 262353), (91, 236406), (93, 231322), (123, 174902), (182, 118203), (186, 115661), (217, 99138), (246, 87451), (273, 78802), (287, 74958), (403, 53382), (434, 49569), (533, 40362), (546, 39401), (574, 37479), (651, 33046), (806, 26691), (861, 24986), (961, 22386), (1066, 20181), (1209, 17794), (1271, 16926), (1302, 16523), (1599, 13454), (1722, 12493), (1922, 11193), (2418, 8897), (2542, 8463), (2821, 7626), (2883, 7462), (3198, 6727), (3731, 5766), (3813, 5642)]