21988516707

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{44851}}^1$

素因数の和:44984

約数の個数: 48

約数和(自身を含む): 34704683520

約数和(自身を除く): 12716166813

約数列:

[1, 3, 9, 19, 47, 57, 61, 141, 171, 183, 423, 549, 893, 1159, 2679, 2867, 3477, 8037, 8601, 10431, 25803, 44851, 54473, 134553, 163419, 403659, 490257, 852169, 2107997, 2556507, 2735911, 6323991, 7669521, 8207733, 18971973, 24623199, 40051943, 51982309, 120155829, 128587817, 155946927, 360467487, 385763451, 467840781, 1157290353, 2443168523, 7329505569, 21988516707]

約数ペア:

[(1, 21988516707), (3, 7329505569), (9, 2443168523), (19, 1157290353), (47, 467840781), (57, 385763451), (61, 360467487), (141, 155946927), (171, 128587817), (183, 120155829), (423, 51982309), (549, 40051943), (893, 24623199), (1159, 18971973), (2679, 8207733), (2867, 7669521), (3477, 6323991), (8037, 2735911), (8601, 2556507), (10431, 2107997), (25803, 852169), (44851, 490257), (54473, 403659), (134553, 163419)]