28147140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:362

約数の個数: 144

約数和(自身を含む): 99066240

約数和(自身を除く): 70919100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 89, 90, 105, 126, 140, 178, 180, 210, 251, 252, 267, 315, 356, 420, 445, 502, 534, 623, 630, 753, 801, 890, 1004, 1068, 1246, 1255, 1260, 1335, 1506, 1602, 1757, 1780, 1869, 2259, 2492, 2510, 2670, 3012, 3115, 3204, 3514, 3738, 3765, 4005, 4518, 5020, 5271, 5340, 5607, 6230, 7028, 7476, 7530, 8010, 8785, 9036, 9345, 10542, 11214, 11295, 12460, 15060, 15813, 16020, 17570, 18690, 21084, 22339, 22428, 22590, 26355, 28035, 31626, 35140, 37380, 44678, 45180, 52710, 56070, 63252, 67017, 79065, 89356, 105420, 111695, 112140, 134034, 156373, 158130, 201051, 223390, 268068, 312746, 316260, 335085, 402102, 446780, 469119, 625492, 670170, 781865, 804204, 938238, 1005255, 1340340, 1407357, 1563730, 1876476, 2010510, 2345595, 2814714, 3127460, 4021020, 4691190, 5629428, 7036785, 9382380, 14073570, 28147140]

約数ペア:

[(1, 28147140), (2, 14073570), (3, 9382380), (4, 7036785), (5, 5629428), (6, 4691190), (7, 4021020), (9, 3127460), (10, 2814714), (12, 2345595), (14, 2010510), (15, 1876476), (18, 1563730), (20, 1407357), (21, 1340340), (28, 1005255), (30, 938238), (35, 804204), (36, 781865), (42, 670170), (45, 625492), (60, 469119), (63, 446780), (70, 402102), (84, 335085), (89, 316260), (90, 312746), (105, 268068), (126, 223390), (140, 201051), (178, 158130), (180, 156373), (210, 134034), (251, 112140), (252, 111695), (267, 105420), (315, 89356), (356, 79065), (420, 67017), (445, 63252), (502, 56070), (534, 52710), (623, 45180), (630, 44678), (753, 37380), (801, 35140), (890, 31626), (1004, 28035), (1068, 26355), (1246, 22590), (1255, 22428), (1260, 22339), (1335, 21084), (1506, 18690), (1602, 17570), (1757, 16020), (1780, 15813), (1869, 15060), (2259, 12460), (2492, 11295), (2510, 11214), (2670, 10542), (3012, 9345), (3115, 9036), (3204, 8785), (3514, 8010), (3738, 7530), (3765, 7476), (4005, 7028), (4518, 6230), (5020, 5607), (5271, 5340)]