21699535

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 10475825

約数列:

[1, 5, 11, 13, 31, 55, 65, 89, 121, 143, 155, 341, 403, 445, 605, 715, 979, 1157, 1573, 1705, 2015, 2759, 3751, 4433, 4895, 5785, 7865, 10769, 12727, 13795, 18755, 22165, 30349, 35867, 48763, 53845, 63635, 139997, 151745, 179335, 243815, 333839, 394537, 699985, 1669195, 1972685, 4339907, 21699535]

約数ペア:

[(1, 21699535), (5, 4339907), (11, 1972685), (13, 1669195), (31, 699985), (55, 394537), (65, 333839), (89, 243815), (121, 179335), (143, 151745), (155, 139997), (341, 63635), (403, 53845), (445, 48763), (605, 35867), (715, 30349), (979, 22165), (1157, 18755), (1573, 13795), (1705, 12727), (2015, 10769), (2759, 7865), (3751, 5785), (4433, 4895)]