31378400

素因数分解:

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

素因数の和:724

約数の個数: 72

約数和(自身を含む): 77979384

約数和(自身を除く): 46600984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 80, 100, 122, 160, 200, 244, 305, 400, 488, 610, 643, 800, 976, 1220, 1286, 1525, 1952, 2440, 2572, 3050, 3215, 4880, 5144, 6100, 6430, 9760, 10288, 12200, 12860, 16075, 20576, 24400, 25720, 32150, 39223, 48800, 51440, 64300, 78446, 102880, 128600, 156892, 196115, 257200, 313784, 392230, 514400, 627568, 784460, 980575, 1255136, 1568920, 1961150, 3137840, 3922300, 6275680, 7844600, 15689200, 31378400]

約数ペア:

[(1, 31378400), (2, 15689200), (4, 7844600), (5, 6275680), (8, 3922300), (10, 3137840), (16, 1961150), (20, 1568920), (25, 1255136), (32, 980575), (40, 784460), (50, 627568), (61, 514400), (80, 392230), (100, 313784), (122, 257200), (160, 196115), (200, 156892), (244, 128600), (305, 102880), (400, 78446), (488, 64300), (610, 51440), (643, 48800), (800, 39223), (976, 32150), (1220, 25720), (1286, 24400), (1525, 20576), (1952, 16075), (2440, 12860), (2572, 12200), (3050, 10288), (3215, 9760), (4880, 6430), (5144, 6100)]