28077825

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 49746816

約数和(自身を除く): 21668991

約数列:

[1, 3, 5, 15, 23, 25, 41, 69, 75, 115, 123, 205, 345, 397, 575, 615, 943, 1025, 1191, 1725, 1985, 2829, 3075, 4715, 5955, 9131, 9925, 14145, 16277, 23575, 27393, 29775, 45655, 48831, 70725, 81385, 136965, 228275, 244155, 374371, 406925, 684825, 1123113, 1220775, 1871855, 5615565, 9359275, 28077825]

約数ペア:

[(1, 28077825), (3, 9359275), (5, 5615565), (15, 1871855), (23, 1220775), (25, 1123113), (41, 684825), (69, 406925), (75, 374371), (115, 244155), (123, 228275), (205, 136965), (345, 81385), (397, 70725), (575, 48831), (615, 45655), (943, 29775), (1025, 27393), (1191, 23575), (1725, 16277), (1985, 14145), (2829, 9925), (3075, 9131), (4715, 5955)]