28405480

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{7321}}^1$

素因数の和:7429

約数の個数: 32

約数和(自身を含む): 64580040

約数和(自身を除く): 36174560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 7321, 14642, 29284, 36605, 58568, 73210, 146420, 292840, 710137, 1420274, 2840548, 3550685, 5681096, 7101370, 14202740, 28405480]

約数ペア:

[(1, 28405480), (2, 14202740), (4, 7101370), (5, 5681096), (8, 3550685), (10, 2840548), (20, 1420274), (40, 710137), (97, 292840), (194, 146420), (388, 73210), (485, 58568), (776, 36605), (970, 29284), (1940, 14642), (3880, 7321)]