28557880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54919}}^1$

素因数の和:54943

約数の個数: 32

約数和(自身を含む): 69199200

約数和(自身を除く): 40641320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54919, 109838, 219676, 274595, 439352, 549190, 713947, 1098380, 1427894, 2196760, 2855788, 3569735, 5711576, 7139470, 14278940, 28557880]

約数ペア:

[(1, 28557880), (2, 14278940), (4, 7139470), (5, 5711576), (8, 3569735), (10, 2855788), (13, 2196760), (20, 1427894), (26, 1098380), (40, 713947), (52, 549190), (65, 439352), (104, 274595), (130, 219676), (260, 109838), (520, 54919)]