256251420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{5413}}^1$

素因数の和:5691

約数の個数: 72

約数和(自身を含む): 780395616

約数和(自身を除く): 524144196

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 263, 526, 789, 1052, 1315, 1578, 2367, 2630, 3156, 3945, 4734, 5260, 5413, 7890, 9468, 10826, 11835, 15780, 16239, 21652, 23670, 27065, 32478, 47340, 48717, 54130, 64956, 81195, 97434, 108260, 162390, 194868, 243585, 324780, 487170, 974340, 1423619, 2847238, 4270857, 5694476, 7118095, 8541714, 12812571, 14236190, 17083428, 21354285, 25625142, 28472380, 42708570, 51250284, 64062855, 85417140, 128125710, 256251420]

約数ペア:

[(1, 256251420), (2, 128125710), (3, 85417140), (4, 64062855), (5, 51250284), (6, 42708570), (9, 28472380), (10, 25625142), (12, 21354285), (15, 17083428), (18, 14236190), (20, 12812571), (30, 8541714), (36, 7118095), (45, 5694476), (60, 4270857), (90, 2847238), (180, 1423619), (263, 974340), (526, 487170), (789, 324780), (1052, 243585), (1315, 194868), (1578, 162390), (2367, 108260), (2630, 97434), (3156, 81195), (3945, 64956), (4734, 54130), (5260, 48717), (5413, 47340), (7890, 32478), (9468, 27065), (10826, 23670), (11835, 21652), (15780, 16239)]