21173904

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:213

約数の個数: 120

約数和(自身を含む): 63835200

約数和(自身を除く): 42661296

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 71, 72, 76, 109, 114, 142, 144, 152, 171, 213, 218, 228, 284, 304, 327, 342, 426, 436, 456, 568, 639, 654, 684, 852, 872, 912, 981, 1136, 1278, 1308, 1349, 1368, 1704, 1744, 1962, 2071, 2556, 2616, 2698, 2736, 3408, 3924, 4047, 4142, 5112, 5232, 5396, 6213, 7739, 7848, 8094, 8284, 10224, 10792, 12141, 12426, 15478, 15696, 16188, 16568, 18639, 21584, 23217, 24282, 24852, 30956, 32376, 33136, 37278, 46434, 48564, 49704, 61912, 64752, 69651, 74556, 92868, 97128, 99408, 123824, 139302, 147041, 149112, 185736, 194256, 278604, 294082, 298224, 371472, 441123, 557208, 588164, 882246, 1114416, 1176328, 1323369, 1764492, 2352656, 2646738, 3528984, 5293476, 7057968, 10586952, 21173904]

約数ペア:

[(1, 21173904), (2, 10586952), (3, 7057968), (4, 5293476), (6, 3528984), (8, 2646738), (9, 2352656), (12, 1764492), (16, 1323369), (18, 1176328), (19, 1114416), (24, 882246), (36, 588164), (38, 557208), (48, 441123), (57, 371472), (71, 298224), (72, 294082), (76, 278604), (109, 194256), (114, 185736), (142, 149112), (144, 147041), (152, 139302), (171, 123824), (213, 99408), (218, 97128), (228, 92868), (284, 74556), (304, 69651), (327, 64752), (342, 61912), (426, 49704), (436, 48564), (456, 46434), (568, 37278), (639, 33136), (654, 32376), (684, 30956), (852, 24852), (872, 24282), (912, 23217), (981, 21584), (1136, 18639), (1278, 16568), (1308, 16188), (1349, 15696), (1368, 15478), (1704, 12426), (1744, 12141), (1962, 10792), (2071, 10224), (2556, 8284), (2616, 8094), (2698, 7848), (2736, 7739), (3408, 6213), (3924, 5396), (4047, 5232), (4142, 5112)]