78743680

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2017}}^1$

素因数の和:2097

約数の個数: 64

約数和(自身を含む): 191427480

約数和(自身を除く): 112683800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 1220, 1952, 2017, 2440, 3904, 4034, 4880, 7808, 8068, 9760, 10085, 16136, 19520, 20170, 32272, 39040, 40340, 64544, 80680, 123037, 129088, 161360, 246074, 258176, 322720, 492148, 615185, 645440, 984296, 1230370, 1290880, 1968592, 2460740, 3937184, 4921480, 7874368, 9842960, 15748736, 19685920, 39371840, 78743680]

約数ペア:

[(1, 78743680), (2, 39371840), (4, 19685920), (5, 15748736), (8, 9842960), (10, 7874368), (16, 4921480), (20, 3937184), (32, 2460740), (40, 1968592), (61, 1290880), (64, 1230370), (80, 984296), (122, 645440), (128, 615185), (160, 492148), (244, 322720), (305, 258176), (320, 246074), (488, 161360), (610, 129088), (640, 123037), (976, 80680), (1220, 64544), (1952, 40340), (2017, 39040), (2440, 32272), (3904, 20170), (4034, 19520), (4880, 16136), (7808, 10085), (8068, 9760)]