39982040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20399}}^1$

素因数の和:20424

約数の個数: 48

約数和(自身を含む): 104652000

約数和(自身を除く): 64669960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20399, 40798, 81596, 101995, 142793, 163192, 203990, 285586, 407980, 571172, 713965, 815960, 999551, 1142344, 1427930, 1999102, 2855860, 3998204, 4997755, 5711720, 7996408, 9995510, 19991020, 39982040]

約数ペア:

[(1, 39982040), (2, 19991020), (4, 9995510), (5, 7996408), (7, 5711720), (8, 4997755), (10, 3998204), (14, 2855860), (20, 1999102), (28, 1427930), (35, 1142344), (40, 999551), (49, 815960), (56, 713965), (70, 571172), (98, 407980), (140, 285586), (196, 203990), (245, 163192), (280, 142793), (392, 101995), (490, 81596), (980, 40798), (1960, 20399)]