637751920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1179

約数の個数: 120

約数和(自身を含む): 1644443856

約数和(自身を除く): 1006691936

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, 430, 520, 559, 676, 688, 845, 860, 1040, 1097, 1118, 1352, 1690, 1720, 2194, 2236, 2704, 2795, 3380, 3440, 4388, 4472, 5485, 5590, 6760, 7267, 8776, 8944, 10970, 11180, 13520, 14261, 14534, 17552, 21940, 22360, 28522, 29068, 36335, 43880, 44720, 47171, 57044, 58136, 71305, 72670, 87760, 94342, 114088, 116272, 142610, 145340, 185393, 188684, 228176, 235855, 285220, 290680, 370786, 377368, 471710, 570440, 581360, 613223, 741572, 754736, 926965, 943420, 1140880, 1226446, 1483144, 1853930, 1886840, 2452892, 2966288, 3066115, 3707860, 3773680, 4905784, 6132230, 7415720, 7971899, 9811568, 12264460, 14831440, 15943798, 24528920, 31887596, 39859495, 49057840, 63775192, 79718990, 127550384, 159437980, 318875960, 637751920]

約数ペア:

[(1, 637751920), (2, 318875960), (4, 159437980), (5, 127550384), (8, 79718990), (10, 63775192), (13, 49057840), (16, 39859495), (20, 31887596), (26, 24528920), (40, 15943798), (43, 14831440), (52, 12264460), (65, 9811568), (80, 7971899), (86, 7415720), (104, 6132230), (130, 4905784), (169, 3773680), (172, 3707860), (208, 3066115), (215, 2966288), (260, 2452892), (338, 1886840), (344, 1853930), (430, 1483144), (520, 1226446), (559, 1140880), (676, 943420), (688, 926965), (845, 754736), (860, 741572), (1040, 613223), (1097, 581360), (1118, 570440), (1352, 471710), (1690, 377368), (1720, 370786), (2194, 290680), (2236, 285220), (2704, 235855), (2795, 228176), (3380, 188684), (3440, 185393), (4388, 145340), (4472, 142610), (5485, 116272), (5590, 114088), (6760, 94342), (7267, 87760), (8776, 72670), (8944, 71305), (10970, 58136), (11180, 57044), (13520, 47171), (14261, 44720), (14534, 43880), (17552, 36335), (21940, 29068), (22360, 28522)]