21618656

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:128

約数の個数: 72

約数和(自身を含む): 47544840

約数和(自身を除く): 25926184

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 37, 38, 62, 74, 76, 124, 148, 152, 248, 296, 304, 496, 589, 592, 608, 703, 961, 992, 1147, 1178, 1184, 1406, 1922, 2294, 2356, 2812, 3844, 4588, 4712, 5624, 7688, 9176, 9424, 11248, 15376, 18259, 18352, 18848, 21793, 22496, 30752, 35557, 36518, 36704, 43586, 71114, 73036, 87172, 142228, 146072, 174344, 284456, 292144, 348688, 568912, 584288, 675583, 697376, 1137824, 1351166, 2702332, 5404664, 10809328, 21618656]

約数ペア:

[(1, 21618656), (2, 10809328), (4, 5404664), (8, 2702332), (16, 1351166), (19, 1137824), (31, 697376), (32, 675583), (37, 584288), (38, 568912), (62, 348688), (74, 292144), (76, 284456), (124, 174344), (148, 146072), (152, 142228), (248, 87172), (296, 73036), (304, 71114), (496, 43586), (589, 36704), (592, 36518), (608, 35557), (703, 30752), (961, 22496), (992, 21793), (1147, 18848), (1178, 18352), (1184, 18259), (1406, 15376), (1922, 11248), (2294, 9424), (2356, 9176), (2812, 7688), (3844, 5624), (4588, 4712)]