204099025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 302183784

約数和(自身を除く): 98084759

約数列:

[1, 5, 13, 17, 25, 41, 53, 65, 85, 205, 221, 265, 289, 325, 425, 533, 689, 697, 901, 1025, 1105, 1325, 1445, 2173, 2665, 3445, 3485, 3757, 4505, 5525, 7225, 9061, 10865, 11713, 11849, 13325, 15317, 17225, 17425, 18785, 22525, 28249, 36941, 45305, 54325, 58565, 59245, 76585, 93925, 141245, 154037, 184705, 199121, 226525, 292825, 296225, 382925, 480233, 627997, 706225, 770185, 923525, 995605, 2401165, 3139985, 3850925, 4978025, 8163961, 12005825, 15699925, 40819805, 204099025]

約数ペア:

[(1, 204099025), (5, 40819805), (13, 15699925), (17, 12005825), (25, 8163961), (41, 4978025), (53, 3850925), (65, 3139985), (85, 2401165), (205, 995605), (221, 923525), (265, 770185), (289, 706225), (325, 627997), (425, 480233), (533, 382925), (689, 296225), (697, 292825), (901, 226525), (1025, 199121), (1105, 184705), (1325, 154037), (1445, 141245), (2173, 93925), (2665, 76585), (3445, 59245), (3485, 58565), (3757, 54325), (4505, 45305), (5525, 36941), (7225, 28249), (9061, 22525), (10865, 18785), (11713, 17425), (11849, 17225), (13325, 15317)]