25215981

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 18910227

約数列:

[1, 3, 7, 17, 21, 23, 37, 51, 69, 83, 111, 119, 161, 249, 259, 357, 391, 483, 581, 629, 777, 851, 1173, 1411, 1743, 1887, 1909, 2553, 2737, 3071, 4233, 4403, 5727, 5957, 8211, 9213, 9877, 13209, 13363, 14467, 17871, 21497, 29631, 32453, 40089, 43401, 52207, 64491, 70633, 97359, 101269, 156621, 211899, 227171, 303807, 365449, 494431, 681513, 1096347, 1200761, 1483293, 3602283, 8405327, 25215981]

約数ペア:

[(1, 25215981), (3, 8405327), (7, 3602283), (17, 1483293), (21, 1200761), (23, 1096347), (37, 681513), (51, 494431), (69, 365449), (83, 303807), (111, 227171), (119, 211899), (161, 156621), (249, 101269), (259, 97359), (357, 70633), (391, 64491), (483, 52207), (581, 43401), (629, 40089), (777, 32453), (851, 29631), (1173, 21497), (1411, 17871), (1743, 14467), (1887, 13363), (1909, 13209), (2553, 9877), (2737, 9213), (3071, 8211), (4233, 5957), (4403, 5727)]