28641520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11549}}^1$

素因数の和:11593

約数の個数: 40

約数和(自身を含む): 68745600

約数和(自身を除く): 40104080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 11549, 23098, 46196, 57745, 92392, 115490, 184784, 230980, 358019, 461960, 716038, 923920, 1432076, 1790095, 2864152, 3580190, 5728304, 7160380, 14320760, 28641520]

約数ペア:

[(1, 28641520), (2, 14320760), (4, 7160380), (5, 5728304), (8, 3580190), (10, 2864152), (16, 1790095), (20, 1432076), (31, 923920), (40, 716038), (62, 461960), (80, 358019), (124, 230980), (155, 184784), (248, 115490), (310, 92392), (496, 57745), (620, 46196), (1240, 23098), (2480, 11549)]