20887118

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20584882

約数列:

[1, 2, 7, 14, 17, 19, 31, 34, 38, 62, 119, 133, 149, 217, 238, 266, 298, 323, 434, 527, 589, 646, 1043, 1054, 1178, 2086, 2261, 2533, 2831, 3689, 4123, 4522, 4619, 5066, 5662, 7378, 8246, 9238, 10013, 17731, 19817, 20026, 32333, 35462, 39634, 48127, 64666, 70091, 78523, 87761, 96254, 140182, 157046, 175522, 336889, 549661, 614327, 673778, 1099322, 1228654, 1491937, 2983874, 10443559, 20887118]

約数ペア:

[(1, 20887118), (2, 10443559), (7, 2983874), (14, 1491937), (17, 1228654), (19, 1099322), (31, 673778), (34, 614327), (38, 549661), (62, 336889), (119, 175522), (133, 157046), (149, 140182), (217, 96254), (238, 87761), (266, 78523), (298, 70091), (323, 64666), (434, 48127), (527, 39634), (589, 35462), (646, 32333), (1043, 20026), (1054, 19817), (1178, 17731), (2086, 10013), (2261, 9238), (2533, 8246), (2831, 7378), (3689, 5662), (4123, 5066), (4522, 4619)]