21534885

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 39873600

約数和(自身を除く): 18338715

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 89, 95, 171, 267, 283, 285, 445, 801, 849, 855, 1335, 1415, 1691, 2547, 4005, 4245, 5073, 5377, 8455, 12735, 15219, 16131, 25187, 25365, 26885, 48393, 75561, 76095, 80655, 125935, 226683, 241965, 377805, 478553, 1133415, 1435659, 2392765, 4306977, 7178295, 21534885]

約数ペア:

[(1, 21534885), (3, 7178295), (5, 4306977), (9, 2392765), (15, 1435659), (19, 1133415), (45, 478553), (57, 377805), (89, 241965), (95, 226683), (171, 125935), (267, 80655), (283, 76095), (285, 75561), (445, 48393), (801, 26885), (849, 25365), (855, 25187), (1335, 16131), (1415, 15219), (1691, 12735), (2547, 8455), (4005, 5377), (4245, 5073)]