25514240

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:695

約数の個数: 72

約数和(自身を含む): 63184128

約数和(自身を除く): 37669888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 643, 992, 1240, 1280, 1286, 1984, 2480, 2572, 3215, 3968, 4960, 5144, 6430, 7936, 9920, 10288, 12860, 19840, 19933, 20576, 25720, 39680, 39866, 41152, 51440, 79732, 82304, 99665, 102880, 159464, 164608, 199330, 205760, 318928, 398660, 411520, 637856, 797320, 823040, 1275712, 1594640, 2551424, 3189280, 5102848, 6378560, 12757120, 25514240]

約数ペア:

[(1, 25514240), (2, 12757120), (4, 6378560), (5, 5102848), (8, 3189280), (10, 2551424), (16, 1594640), (20, 1275712), (31, 823040), (32, 797320), (40, 637856), (62, 411520), (64, 398660), (80, 318928), (124, 205760), (128, 199330), (155, 164608), (160, 159464), (248, 102880), (256, 99665), (310, 82304), (320, 79732), (496, 51440), (620, 41152), (640, 39866), (643, 39680), (992, 25720), (1240, 20576), (1280, 19933), (1286, 19840), (1984, 12860), (2480, 10288), (2572, 9920), (3215, 7936), (3968, 6430), (4960, 5144)]