25613440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1341

約数の個数: 64

約数和(自身を含む): 63256320

約数和(自身を除く): 37642880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1291, 1984, 2480, 2582, 3968, 4960, 5164, 6455, 9920, 10328, 12910, 19840, 20656, 25820, 40021, 41312, 51640, 80042, 82624, 103280, 160084, 165248, 200105, 206560, 320168, 400210, 413120, 640336, 800420, 826240, 1280672, 1600840, 2561344, 3201680, 5122688, 6403360, 12806720, 25613440]

約数ペア:

[(1, 25613440), (2, 12806720), (4, 6403360), (5, 5122688), (8, 3201680), (10, 2561344), (16, 1600840), (20, 1280672), (31, 826240), (32, 800420), (40, 640336), (62, 413120), (64, 400210), (80, 320168), (124, 206560), (128, 200105), (155, 165248), (160, 160084), (248, 103280), (310, 82624), (320, 80042), (496, 51640), (620, 41312), (640, 40021), (992, 25820), (1240, 20656), (1291, 19840), (1984, 12910), (2480, 10328), (2582, 9920), (3968, 6455), (4960, 5164)]