21656180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:265

約数の個数: 96

約数和(自身を含む): 57087744

約数和(自身を除く): 35431564

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 73, 91, 130, 140, 146, 163, 182, 260, 292, 326, 364, 365, 455, 511, 652, 730, 815, 910, 949, 1022, 1141, 1460, 1630, 1820, 1898, 2044, 2119, 2282, 2555, 3260, 3796, 4238, 4564, 4745, 5110, 5705, 6643, 8476, 9490, 10220, 10595, 11410, 11899, 13286, 14833, 18980, 21190, 22820, 23798, 26572, 29666, 33215, 42380, 47596, 59332, 59495, 66430, 74165, 83293, 118990, 132860, 148330, 154687, 166586, 237980, 296660, 309374, 333172, 416465, 618748, 773435, 832930, 1082809, 1546870, 1665860, 2165618, 3093740, 4331236, 5414045, 10828090, 21656180]

約数ペア:

[(1, 21656180), (2, 10828090), (4, 5414045), (5, 4331236), (7, 3093740), (10, 2165618), (13, 1665860), (14, 1546870), (20, 1082809), (26, 832930), (28, 773435), (35, 618748), (52, 416465), (65, 333172), (70, 309374), (73, 296660), (91, 237980), (130, 166586), (140, 154687), (146, 148330), (163, 132860), (182, 118990), (260, 83293), (292, 74165), (326, 66430), (364, 59495), (365, 59332), (455, 47596), (511, 42380), (652, 33215), (730, 29666), (815, 26572), (910, 23798), (949, 22820), (1022, 21190), (1141, 18980), (1460, 14833), (1630, 13286), (1820, 11899), (1898, 11410), (2044, 10595), (2119, 10220), (2282, 9490), (2555, 8476), (3260, 6643), (3796, 5705), (4238, 5110), (4564, 4745)]