21000944645

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{1259}}^1$

素因数の和:1478

約数の個数: 64

約数和(自身を含む): 28315526400

約数和(自身を除く): 7314581755

約数列:

[1, 5, 17, 29, 67, 85, 101, 145, 335, 493, 505, 1139, 1259, 1717, 1943, 2465, 2929, 5695, 6295, 6767, 8585, 9715, 14645, 21403, 33031, 33835, 36511, 49793, 84353, 107015, 115039, 127159, 165155, 182555, 196243, 248965, 421765, 575195, 620687, 635795, 981215, 1434001, 2161703, 2446237, 3103435, 3336131, 3687611, 7170005, 8519653, 10808515, 12231185, 16680655, 18438055, 41586029, 42598265, 62689387, 144834101, 207930145, 247069937, 313446935, 724170505, 1235349685, 4200188929, 21000944645]

約数ペア:

[(1, 21000944645), (5, 4200188929), (17, 1235349685), (29, 724170505), (67, 313446935), (85, 247069937), (101, 207930145), (145, 144834101), (335, 62689387), (493, 42598265), (505, 41586029), (1139, 18438055), (1259, 16680655), (1717, 12231185), (1943, 10808515), (2465, 8519653), (2929, 7170005), (5695, 3687611), (6295, 3336131), (6767, 3103435), (8585, 2446237), (9715, 2161703), (14645, 1434001), (21403, 981215), (33031, 635795), (33835, 620687), (36511, 575195), (49793, 421765), (84353, 248965), (107015, 196243), (115039, 182555), (127159, 165155)]