21451755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{4783}}^1$

素因数の和:4827

約数の個数: 32

約数和(自身を含む): 38578176

約数和(自身を除く): 17126421

約数列:

[1, 3, 5, 13, 15, 23, 39, 65, 69, 115, 195, 299, 345, 897, 1495, 4485, 4783, 14349, 23915, 62179, 71745, 110009, 186537, 310895, 330027, 550045, 932685, 1430117, 1650135, 4290351, 7150585, 21451755]

約数ペア:

[(1, 21451755), (3, 7150585), (5, 4290351), (13, 1650135), (15, 1430117), (23, 932685), (39, 550045), (65, 330027), (69, 310895), (115, 186537), (195, 110009), (299, 71745), (345, 62179), (897, 23915), (1495, 14349), (4485, 4783)]