253218385

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 381911040

約数和(自身を除く): 128692655

約数列:

[1, 5, 7, 23, 31, 35, 73, 115, 139, 155, 161, 217, 365, 511, 695, 713, 805, 973, 1085, 1679, 2263, 2555, 3197, 3565, 4309, 4865, 4991, 8395, 10147, 11315, 11753, 15841, 15985, 21545, 22379, 24955, 30163, 50735, 52049, 58765, 71029, 79205, 99107, 111895, 150815, 233381, 260245, 314557, 355145, 364343, 495535, 693749, 1166905, 1572785, 1633667, 1821715, 2201899, 3468745, 7234811, 8168335, 11009495, 36174055, 50643677, 253218385]

約数ペア:

[(1, 253218385), (5, 50643677), (7, 36174055), (23, 11009495), (31, 8168335), (35, 7234811), (73, 3468745), (115, 2201899), (139, 1821715), (155, 1633667), (161, 1572785), (217, 1166905), (365, 693749), (511, 495535), (695, 364343), (713, 355145), (805, 314557), (973, 260245), (1085, 233381), (1679, 150815), (2263, 111895), (2555, 99107), (3197, 79205), (3565, 71029), (4309, 58765), (4865, 52049), (4991, 50735), (8395, 30163), (10147, 24955), (11315, 22379), (11753, 21545), (15841, 15985)]