256109780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 576108288

約数和(自身を除く): 319998508

約数列:

[1, 2, 4, 5, 10, 20, 41, 53, 71, 82, 83, 106, 142, 164, 166, 205, 212, 265, 284, 332, 355, 410, 415, 530, 710, 820, 830, 1060, 1420, 1660, 2173, 2911, 3403, 3763, 4346, 4399, 5822, 5893, 6806, 7526, 8692, 8798, 10865, 11644, 11786, 13612, 14555, 15052, 17015, 17596, 18815, 21730, 21995, 23572, 29110, 29465, 34030, 37630, 43460, 43990, 58220, 58930, 68060, 75260, 87980, 117860, 154283, 180359, 241613, 308566, 312329, 360718, 483226, 617132, 624658, 721436, 771415, 901795, 966452, 1208065, 1249316, 1542830, 1561645, 1803590, 2416130, 3085660, 3123290, 3607180, 4832260, 6246580, 12805489, 25610978, 51221956, 64027445, 128054890, 256109780]

約数ペア:

[(1, 256109780), (2, 128054890), (4, 64027445), (5, 51221956), (10, 25610978), (20, 12805489), (41, 6246580), (53, 4832260), (71, 3607180), (82, 3123290), (83, 3085660), (106, 2416130), (142, 1803590), (164, 1561645), (166, 1542830), (205, 1249316), (212, 1208065), (265, 966452), (284, 901795), (332, 771415), (355, 721436), (410, 624658), (415, 617132), (530, 483226), (710, 360718), (820, 312329), (830, 308566), (1060, 241613), (1420, 180359), (1660, 154283), (2173, 117860), (2911, 87980), (3403, 75260), (3763, 68060), (4346, 58930), (4399, 58220), (5822, 43990), (5893, 43460), (6806, 37630), (7526, 34030), (8692, 29465), (8798, 29110), (10865, 23572), (11644, 21995), (11786, 21730), (13612, 18815), (14555, 17596), (15052, 17015)]