21061728

素因数分解:

$2^5\times 3^3\times {\mathrm{19}}^1\times {\mathrm{1283}}^1$

素因数の和:1321

約数の個数: 96

約数和(自身を含む): 64713600

約数和(自身を除く): 43651872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 27, 32, 36, 38, 48, 54, 57, 72, 76, 96, 108, 114, 144, 152, 171, 216, 228, 288, 304, 342, 432, 456, 513, 608, 684, 864, 912, 1026, 1283, 1368, 1824, 2052, 2566, 2736, 3849, 4104, 5132, 5472, 7698, 8208, 10264, 11547, 15396, 16416, 20528, 23094, 24377, 30792, 34641, 41056, 46188, 48754, 61584, 69282, 73131, 92376, 97508, 123168, 138564, 146262, 184752, 195016, 219393, 277128, 292524, 369504, 390032, 438786, 554256, 585048, 658179, 780064, 877572, 1108512, 1170096, 1316358, 1755144, 2340192, 2632716, 3510288, 5265432, 7020576, 10530864, 21061728]

約数ペア:

[(1, 21061728), (2, 10530864), (3, 7020576), (4, 5265432), (6, 3510288), (8, 2632716), (9, 2340192), (12, 1755144), (16, 1316358), (18, 1170096), (19, 1108512), (24, 877572), (27, 780064), (32, 658179), (36, 585048), (38, 554256), (48, 438786), (54, 390032), (57, 369504), (72, 292524), (76, 277128), (96, 219393), (108, 195016), (114, 184752), (144, 146262), (152, 138564), (171, 123168), (216, 97508), (228, 92376), (288, 73131), (304, 69282), (342, 61584), (432, 48754), (456, 46188), (513, 41056), (608, 34641), (684, 30792), (864, 24377), (912, 23094), (1026, 20528), (1283, 16416), (1368, 15396), (1824, 11547), (2052, 10264), (2566, 8208), (2736, 7698), (3849, 5472), (4104, 5132)]