21392958275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{10691}}^1$

素因数の和:10892

約数の個数: 48

約数和(自身を含む): 29401118208

約数和(自身を除く): 8008159933

約数列:

[1, 5, 13, 25, 47, 65, 131, 235, 325, 611, 655, 1175, 1703, 3055, 3275, 6157, 8515, 10691, 15275, 30785, 42575, 53455, 80041, 138983, 153925, 267275, 400205, 502477, 694915, 1400521, 2001025, 2512385, 3474575, 6532201, 7002605, 12561925, 18206773, 32661005, 35013025, 65824487, 91033865, 163305025, 329122435, 455169325, 855718331, 1645612175, 4278591655, 21392958275]

約数ペア:

[(1, 21392958275), (5, 4278591655), (13, 1645612175), (25, 855718331), (47, 455169325), (65, 329122435), (131, 163305025), (235, 91033865), (325, 65824487), (611, 35013025), (655, 32661005), (1175, 18206773), (1703, 12561925), (3055, 7002605), (3275, 6532201), (6157, 3474575), (8515, 2512385), (10691, 2001025), (15275, 1400521), (30785, 694915), (42575, 502477), (53455, 400205), (80041, 267275), (138983, 153925)]