28790780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23599}}^1$

素因数の和:23669

約数の個数: 24

約数和(自身を含む): 61454400

約数和(自身を除く): 32663620

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 23599, 47198, 94396, 117995, 235990, 471980, 1439539, 2879078, 5758156, 7197695, 14395390, 28790780]

約数ペア:

[(1, 28790780), (2, 14395390), (4, 7197695), (5, 5758156), (10, 2879078), (20, 1439539), (61, 471980), (122, 235990), (244, 117995), (305, 94396), (610, 47198), (1220, 23599)]