19801002

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 26647638

約数列:

[1, 2, 3, 6, 13, 19, 26, 31, 38, 39, 57, 62, 78, 93, 114, 186, 247, 403, 431, 494, 589, 741, 806, 862, 1178, 1209, 1293, 1482, 1767, 2418, 2586, 3534, 5603, 7657, 8189, 11206, 13361, 15314, 16378, 16809, 22971, 24567, 26722, 33618, 40083, 45942, 49134, 80166, 106457, 173693, 212914, 253859, 319371, 347386, 507718, 521079, 638742, 761577, 1042158, 1523154, 3300167, 6600334, 9900501, 19801002]

約数ペア:

[(1, 19801002), (2, 9900501), (3, 6600334), (6, 3300167), (13, 1523154), (19, 1042158), (26, 761577), (31, 638742), (38, 521079), (39, 507718), (57, 347386), (62, 319371), (78, 253859), (93, 212914), (114, 173693), (186, 106457), (247, 80166), (403, 49134), (431, 45942), (494, 40083), (589, 33618), (741, 26722), (806, 24567), (862, 22971), (1178, 16809), (1209, 16378), (1293, 15314), (1482, 13361), (1767, 11206), (2418, 8189), (2586, 7657), (3534, 5603)]