20191974

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 26256666

約数列:

[1, 2, 3, 6, 11, 22, 31, 33, 62, 66, 71, 93, 139, 142, 186, 213, 278, 341, 417, 426, 682, 781, 834, 1023, 1529, 1562, 2046, 2201, 2343, 3058, 4309, 4402, 4587, 4686, 6603, 8618, 9174, 9869, 12927, 13206, 19738, 24211, 25854, 29607, 47399, 48422, 59214, 72633, 94798, 108559, 142197, 145266, 217118, 284394, 305939, 325677, 611878, 651354, 917817, 1835634, 3365329, 6730658, 10095987, 20191974]

約数ペア:

[(1, 20191974), (2, 10095987), (3, 6730658), (6, 3365329), (11, 1835634), (22, 917817), (31, 651354), (33, 611878), (62, 325677), (66, 305939), (71, 284394), (93, 217118), (139, 145266), (142, 142197), (186, 108559), (213, 94798), (278, 72633), (341, 59214), (417, 48422), (426, 47399), (682, 29607), (781, 25854), (834, 24211), (1023, 19738), (1529, 13206), (1562, 12927), (2046, 9869), (2201, 9174), (2343, 8618), (3058, 6603), (4309, 4686), (4402, 4587)]