17971155

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 33022080

約数和(自身を除く): 15050925

約数列:

[1, 3, 5, 9, 15, 29, 45, 47, 87, 141, 145, 235, 261, 293, 423, 435, 705, 879, 1305, 1363, 1465, 2115, 2637, 4089, 4395, 6815, 8497, 12267, 13185, 13771, 20445, 25491, 41313, 42485, 61335, 68855, 76473, 123939, 127455, 206565, 382365, 399359, 619695, 1198077, 1996795, 3594231, 5990385, 17971155]

約数ペア:

[(1, 17971155), (3, 5990385), (5, 3594231), (9, 1996795), (15, 1198077), (29, 619695), (45, 399359), (47, 382365), (87, 206565), (141, 127455), (145, 123939), (235, 76473), (261, 68855), (293, 61335), (423, 42485), (435, 41313), (705, 25491), (879, 20445), (1305, 13771), (1363, 13185), (1465, 12267), (2115, 8497), (2637, 6815), (4089, 4395)]