19969456

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:234

約数の個数: 80

約数和(自身を含む): 45552640

約数和(自身を除く): 25583184

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 38, 52, 62, 76, 104, 124, 152, 163, 208, 247, 248, 304, 326, 403, 494, 496, 589, 652, 806, 988, 1178, 1304, 1612, 1976, 2119, 2356, 2608, 3097, 3224, 3952, 4238, 4712, 5053, 6194, 6448, 7657, 8476, 9424, 10106, 12388, 15314, 16952, 20212, 24776, 30628, 33904, 40261, 40424, 49552, 61256, 65689, 80522, 80848, 96007, 122512, 131378, 161044, 192014, 262756, 322088, 384028, 525512, 644176, 768056, 1051024, 1248091, 1536112, 2496182, 4992364, 9984728, 19969456]

約数ペア:

[(1, 19969456), (2, 9984728), (4, 4992364), (8, 2496182), (13, 1536112), (16, 1248091), (19, 1051024), (26, 768056), (31, 644176), (38, 525512), (52, 384028), (62, 322088), (76, 262756), (104, 192014), (124, 161044), (152, 131378), (163, 122512), (208, 96007), (247, 80848), (248, 80522), (304, 65689), (326, 61256), (403, 49552), (494, 40424), (496, 40261), (589, 33904), (652, 30628), (806, 24776), (988, 20212), (1178, 16952), (1304, 15314), (1612, 12388), (1976, 10106), (2119, 9424), (2356, 8476), (2608, 7657), (3097, 6448), (3224, 6194), (3952, 5053), (4238, 4712)]