25102720

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:723

約数の個数: 64

約数和(自身を含む): 61089840

約数和(自身を除く): 35987120

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, 643, 976, 1220, 1286, 1952, 2440, 2572, 3215, 3904, 4880, 5144, 6430, 7808, 9760, 10288, 12860, 19520, 20576, 25720, 39040, 39223, 41152, 51440, 78446, 82304, 102880, 156892, 196115, 205760, 313784, 392230, 411520, 627568, 784460, 1255136, 1568920, 2510272, 3137840, 5020544, 6275680, 12551360, 25102720]

約数ペア:

[(1, 25102720), (2, 12551360), (4, 6275680), (5, 5020544), (8, 3137840), (10, 2510272), (16, 1568920), (20, 1255136), (32, 784460), (40, 627568), (61, 411520), (64, 392230), (80, 313784), (122, 205760), (128, 196115), (160, 156892), (244, 102880), (305, 82304), (320, 78446), (488, 51440), (610, 41152), (640, 39223), (643, 39040), (976, 25720), (1220, 20576), (1286, 19520), (1952, 12860), (2440, 10288), (2572, 9760), (3215, 7808), (3904, 6430), (4880, 5144)]