201731920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:429

約数の個数: 120

約数和(自身を含む): 521189856

約数和(自身を除く): 319457936

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 169, 172, 208, 215, 260, 338, 344, 347, 430, 520, 559, 676, 688, 694, 845, 860, 1040, 1118, 1352, 1388, 1690, 1720, 1735, 2236, 2704, 2776, 2795, 3380, 3440, 3470, 4472, 4511, 5552, 5590, 6760, 6940, 7267, 8944, 9022, 11180, 13520, 13880, 14534, 14921, 18044, 22360, 22555, 27760, 29068, 29842, 36088, 36335, 44720, 45110, 58136, 58643, 59684, 72176, 72670, 74605, 90220, 116272, 117286, 119368, 145340, 149210, 180440, 193973, 234572, 238736, 290680, 293215, 298420, 360880, 387946, 469144, 581360, 586430, 596840, 775892, 938288, 969865, 1172860, 1193680, 1551784, 1939730, 2345720, 2521649, 3103568, 3879460, 4691440, 5043298, 7758920, 10086596, 12608245, 15517840, 20173192, 25216490, 40346384, 50432980, 100865960, 201731920]

約数ペア:

[(1, 201731920), (2, 100865960), (4, 50432980), (5, 40346384), (8, 25216490), (10, 20173192), (13, 15517840), (16, 12608245), (20, 10086596), (26, 7758920), (40, 5043298), (43, 4691440), (52, 3879460), (65, 3103568), (80, 2521649), (86, 2345720), (104, 1939730), (130, 1551784), (169, 1193680), (172, 1172860), (208, 969865), (215, 938288), (260, 775892), (338, 596840), (344, 586430), (347, 581360), (430, 469144), (520, 387946), (559, 360880), (676, 298420), (688, 293215), (694, 290680), (845, 238736), (860, 234572), (1040, 193973), (1118, 180440), (1352, 149210), (1388, 145340), (1690, 119368), (1720, 117286), (1735, 116272), (2236, 90220), (2704, 74605), (2776, 72670), (2795, 72176), (3380, 59684), (3440, 58643), (3470, 58136), (4472, 45110), (4511, 44720), (5552, 36335), (5590, 36088), (6760, 29842), (6940, 29068), (7267, 27760), (8944, 22555), (9022, 22360), (11180, 18044), (13520, 14921), (13880, 14534)]