21157792

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 96

約数和(自身を含む): 48988800

約数和(自身を除く): 27831008

約数列:

[1, 2, 4, 8, 16, 17, 19, 23, 32, 34, 38, 46, 68, 76, 89, 92, 136, 152, 178, 184, 272, 304, 323, 356, 368, 391, 437, 544, 608, 646, 712, 736, 782, 874, 1292, 1424, 1513, 1564, 1691, 1748, 2047, 2584, 2848, 3026, 3128, 3382, 3496, 4094, 5168, 6052, 6256, 6764, 6992, 7429, 8188, 10336, 12104, 12512, 13528, 13984, 14858, 16376, 24208, 27056, 28747, 29716, 32752, 34799, 38893, 48416, 54112, 57494, 59432, 65504, 69598, 77786, 114988, 118864, 139196, 155572, 229976, 237728, 278392, 311144, 459952, 556784, 622288, 661181, 919904, 1113568, 1244576, 1322362, 2644724, 5289448, 10578896, 21157792]

約数ペア:

[(1, 21157792), (2, 10578896), (4, 5289448), (8, 2644724), (16, 1322362), (17, 1244576), (19, 1113568), (23, 919904), (32, 661181), (34, 622288), (38, 556784), (46, 459952), (68, 311144), (76, 278392), (89, 237728), (92, 229976), (136, 155572), (152, 139196), (178, 118864), (184, 114988), (272, 77786), (304, 69598), (323, 65504), (356, 59432), (368, 57494), (391, 54112), (437, 48416), (544, 38893), (608, 34799), (646, 32752), (712, 29716), (736, 28747), (782, 27056), (874, 24208), (1292, 16376), (1424, 14858), (1513, 13984), (1564, 13528), (1691, 12512), (1748, 12104), (2047, 10336), (2584, 8188), (2848, 7429), (3026, 6992), (3128, 6764), (3382, 6256), (3496, 6052), (4094, 5168)]